diff --git a/tests/bsim/bluetooth/audio/compile.sh b/tests/bsim/bluetooth/audio/compile.sh
index a77799ea477..c06c5a1e67b 100755
--- a/tests/bsim/bluetooth/audio/compile.sh
+++ b/tests/bsim/bluetooth/audio/compile.sh
@@ -7,13 +7,14 @@
 #set -x #uncomment this line for debugging
 set -ue
 
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
+
+
 : "${BSIM_COMPONENTS_PATH:?BSIM_COMPONENTS_PATH must be defined}"
 : "${ZEPHYR_BASE:?ZEPHYR_BASE must be set to point to the zephyr root\
  directory}"
 
 WORK_DIR="${WORK_DIR:-${ZEPHYR_BASE}/bsim_out}"
-BOARD="${BOARD:-nrf52_bsim}"
+
 BOARD_ROOT="${BOARD_ROOT:-${ZEPHYR_BASE}}"
 
 mkdir -p ${WORK_DIR}
diff --git a/tests/bsim/bluetooth/audio/test_scripts/bap_bass.sh b/tests/bsim/bluetooth/audio/test_scripts/bap_bass.sh
index 7a08b12313f..cc0f059379a 100755
--- a/tests/bsim/bluetooth/audio/test_scripts/bap_bass.sh
+++ b/tests/bsim/bluetooth/audio/test_scripts/bap_bass.sh
@@ -6,21 +6,9 @@
 
 SIMULATION_ID="bass"
 VERBOSITY_LEVEL=2
-PROCESS_IDS=""; EXIT_CODE=0
+EXECUTE_TIMEOUT=20
 
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 20 $@ & PROCESS_IDS="$PROCESS_IDS $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -41,8 +29,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} -D=3 \
   -sim_length=60e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
-
-exit $EXIT_CODE #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/audio/test_scripts/bap_broadcast_audio.sh b/tests/bsim/bluetooth/audio/test_scripts/bap_broadcast_audio.sh
index 2e5b7d4c2d2..10e9af21bbe 100755
--- a/tests/bsim/bluetooth/audio/test_scripts/bap_broadcast_audio.sh
+++ b/tests/bsim/bluetooth/audio/test_scripts/bap_broadcast_audio.sh
@@ -5,21 +5,9 @@
 # SPDX-License-Identifier: Apache-2.0
 
 VERBOSITY_LEVEL=2
-PROCESS_IDS=""; EXIT_CODE=0
+EXECUTE_TIMEOUT=20
 
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 20 $@ & PROCESS_IDS="$PROCESS_IDS $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -38,9 +26,7 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} \
   -D=2 -sim_length=60e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
+wait_for_background_jobs
 
 printf "\n\n======== Broadcaster sink disconnect test =========\n\n"
 
@@ -58,8 +44,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} \
   -D=2 -sim_length=60e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
-
-exit $EXIT_CODE #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/audio/test_scripts/bap_unicast_audio.sh b/tests/bsim/bluetooth/audio/test_scripts/bap_unicast_audio.sh
index 9d9b82ea9bc..5fd562a29f8 100755
--- a/tests/bsim/bluetooth/audio/test_scripts/bap_unicast_audio.sh
+++ b/tests/bsim/bluetooth/audio/test_scripts/bap_unicast_audio.sh
@@ -6,21 +6,9 @@
 
 SIMULATION_ID="unicast_audio"
 VERBOSITY_LEVEL=2
-PROCESS_IDS=""; EXIT_CODE=0
+EXECUTE_TIMEOUT=20
 
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 20 $@ & PROCESS_IDS="$PROCESS_IDS $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -29,7 +17,6 @@ printf "\n\n======== Unicast Audio test =========\n\n"
 Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
   -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} -d=0 -testid=unicast_client -rs=23
 
-
 Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
   -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} -d=1 -testid=unicast_server -rs=27
 
@@ -37,8 +24,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} \
   -D=2 -sim_length=60e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
-
-exit $EXIT_CODE #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/audio/test_scripts/cap_broadcast.sh b/tests/bsim/bluetooth/audio/test_scripts/cap_broadcast.sh
index 5f448cf2279..a18573e2192 100755
--- a/tests/bsim/bluetooth/audio/test_scripts/cap_broadcast.sh
+++ b/tests/bsim/bluetooth/audio/test_scripts/cap_broadcast.sh
@@ -6,21 +6,9 @@
 
 SIMULATION_ID="cap_broadcast"
 VERBOSITY_LEVEL=2
-PROCESS_IDS=""; EXIT_CODE=0
+EXECUTE_TIMEOUT=20
 
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 20 $@ & PROCESS_IDS="$PROCESS_IDS $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -36,8 +24,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} \
   -D=2 -sim_length=60e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
-
-exit $EXIT_CODE #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/audio/test_scripts/cap_unicast.sh b/tests/bsim/bluetooth/audio/test_scripts/cap_unicast.sh
index f0ed6f2c3bb..e657ac958ee 100755
--- a/tests/bsim/bluetooth/audio/test_scripts/cap_unicast.sh
+++ b/tests/bsim/bluetooth/audio/test_scripts/cap_unicast.sh
@@ -6,21 +6,9 @@
 
 SIMULATION_ID="cap_unicast"
 VERBOSITY_LEVEL=2
-PROCESS_IDS=""; EXIT_CODE=0
+EXECUTE_TIMEOUT=20
 
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 20 $@ & PROCESS_IDS="$PROCESS_IDS $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -36,8 +24,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} \
   -D=2 -sim_length=60e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
-
-exit $EXIT_CODE #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/audio/test_scripts/csip.sh b/tests/bsim/bluetooth/audio/test_scripts/csip.sh
index 20b307a2ff8..1490b3432fd 100755
--- a/tests/bsim/bluetooth/audio/test_scripts/csip.sh
+++ b/tests/bsim/bluetooth/audio/test_scripts/csip.sh
@@ -7,22 +7,10 @@
 # Basic CSIP test. A set coordinator connects to multiple set members
 # lock thems, unlocks them and disconnects.
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 VERBOSITY_LEVEL=2
-PROCESS_IDS=""; EXIT_CODE=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 20 $@ & PROCESS_IDS="$PROCESS_IDS $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=20
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -51,11 +39,7 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} \
   -D=4 -sim_length=60e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
-
-PROCESS_IDS="";
+wait_for_background_jobs
 
 # TEST WITH FORCE RELEASE
 
@@ -82,9 +66,7 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} \
   -D=4 -sim_length=60e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
+wait_for_background_jobs
 
 # TEST WITH SIRK ENC
 
@@ -111,7 +93,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} \
   -D=4 -sim_length=60e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
-exit $EXIT_CODE #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/audio/test_scripts/has.sh b/tests/bsim/bluetooth/audio/test_scripts/has.sh
index b35c7c13186..e2bface0396 100755
--- a/tests/bsim/bluetooth/audio/test_scripts/has.sh
+++ b/tests/bsim/bluetooth/audio/test_scripts/has.sh
@@ -4,23 +4,11 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 SIMULATION_ID="has"
 VERBOSITY_LEVEL=2
-PROCESS_IDS=""; EXIT_CODE=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 20 $@ & PROCESS_IDS="$PROCESS_IDS $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=20
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -35,8 +23,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} \
   -D=2 -sim_length=60e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
-
-exit $EXIT_CODE #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/audio/test_scripts/ias.sh b/tests/bsim/bluetooth/audio/test_scripts/ias.sh
index a310c1dd232..3547d6996e8 100755
--- a/tests/bsim/bluetooth/audio/test_scripts/ias.sh
+++ b/tests/bsim/bluetooth/audio/test_scripts/ias.sh
@@ -4,23 +4,11 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 SIMULATION_ID="ias"
 VERBOSITY_LEVEL=2
-PROCESS_IDS=""; EXIT_CODE=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 20 $@ & PROCESS_IDS="$PROCESS_IDS $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=20
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -36,8 +24,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} \
   -D=2 -sim_length=60e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
-
-exit $EXIT_CODE #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/audio/test_scripts/mcs_mcc.sh b/tests/bsim/bluetooth/audio/test_scripts/mcs_mcc.sh
index 679b3026af1..1e31932efe7 100755
--- a/tests/bsim/bluetooth/audio/test_scripts/mcs_mcc.sh
+++ b/tests/bsim/bluetooth/audio/test_scripts/mcs_mcc.sh
@@ -4,23 +4,11 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 SIMULATION_ID="mcs_mcc"
 VERBOSITY_LEVEL=2
-PROCESS_IDS=""; EXIT_CODE=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 20 $@ & PROCESS_IDS="$PROCESS_IDS $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=20
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -36,8 +24,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} \
   -D=2 -sim_length=60e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
-
-exit $EXIT_CODE #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/audio/test_scripts/media_controller.sh b/tests/bsim/bluetooth/audio/test_scripts/media_controller.sh
index 16a913a7dac..ab036d39497 100755
--- a/tests/bsim/bluetooth/audio/test_scripts/media_controller.sh
+++ b/tests/bsim/bluetooth/audio/test_scripts/media_controller.sh
@@ -4,23 +4,11 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 SIMULATION_ID="media_controller"
 VERBOSITY_LEVEL=2
-PROCESS_IDS=""; EXIT_CODE=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 20 $@ & PROCESS_IDS="$PROCESS_IDS $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=20
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -33,9 +21,7 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} \
   -D=1 -sim_length=60e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
+wait_for_background_jobs
 
 printf "\n\n======== Running media controller remote_player test =========\n\n"
 
@@ -49,8 +35,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} \
   -D=2 -sim_length=60e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
-
-exit $EXIT_CODE #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/audio/test_scripts/micp.sh b/tests/bsim/bluetooth/audio/test_scripts/micp.sh
index 06c201319d3..3117f665116 100755
--- a/tests/bsim/bluetooth/audio/test_scripts/micp.sh
+++ b/tests/bsim/bluetooth/audio/test_scripts/micp.sh
@@ -4,23 +4,11 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 SIMULATION_ID="micp"
 VERBOSITY_LEVEL=2
-PROCESS_IDS=""; EXIT_CODE=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 20 $@ & PROCESS_IDS="$PROCESS_IDS $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=20
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -33,9 +21,7 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} \
   -D=1 -sim_length=60e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
+wait_for_background_jobs
 
 printf "\n\n==== Running MICP Microphone Device and MICP Microphone Controller test ====n\n"
 
@@ -49,8 +35,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} \
   -D=2 -sim_length=60e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
-
-exit $EXIT_CODE #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/audio/test_scripts/tbs.sh b/tests/bsim/bluetooth/audio/test_scripts/tbs.sh
index 84b44a29dec..e5f9e09fbd5 100755
--- a/tests/bsim/bluetooth/audio/test_scripts/tbs.sh
+++ b/tests/bsim/bluetooth/audio/test_scripts/tbs.sh
@@ -7,21 +7,10 @@
 
 SIMULATION_ID="tbs_ccp"
 VERBOSITY_LEVEL=2
-PROCESS_IDS=""; EXIT_CODE=0
 
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 20 $@ & PROCESS_IDS="$PROCESS_IDS $!"
-}
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=20
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -35,7 +24,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} \
   -D=2 -sim_length=60e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
-exit $EXIT_CODE #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/audio/test_scripts/vcp.sh b/tests/bsim/bluetooth/audio/test_scripts/vcp.sh
index 56e28e78aad..0be421894ba 100755
--- a/tests/bsim/bluetooth/audio/test_scripts/vcp.sh
+++ b/tests/bsim/bluetooth/audio/test_scripts/vcp.sh
@@ -4,23 +4,11 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 SIMULATION_ID="vcp"
 VERBOSITY_LEVEL=2
-PROCESS_IDS=""; EXIT_CODE=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 20 $@ & PROCESS_IDS="$PROCESS_IDS $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=20
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -33,9 +21,7 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} \
   -D=1 -sim_length=60e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
+wait_for_background_jobs
 
 printf "\n\n======== Running VCP Volume Renderer and VCP Volume Controller test =========\n\n"
 
@@ -49,8 +35,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_audio_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} \
   -D=2 -sim_length=60e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
-
-exit $EXIT_CODE #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/adv/chain/tests_scripts/adv_chain.sh b/tests/bsim/bluetooth/host/adv/chain/tests_scripts/adv_chain.sh
index 28b608efd34..ab3f1c07896 100755
--- a/tests/bsim/bluetooth/host/adv/chain/tests_scripts/adv_chain.sh
+++ b/tests/bsim/bluetooth/host/adv/chain/tests_scripts/adv_chain.sh
@@ -4,23 +4,11 @@
 
 # Validate Extended Advertising AD Data fragment operation, PDU chaining and
 # Extended Scanning of chain PDUs
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 simulation_id="adv_chain"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 10 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=10
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -33,7 +21,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_adv_chain_prj_conf\
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=10e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv.sh b/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv.sh
index 3d1e189a776..aa2e8249fae 100755
--- a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv.sh
+++ b/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv.sh
@@ -4,23 +4,12 @@
 
 # Basic periodic advertising sync test: an advertiser advertises with periodic
 # advertising, and a scanner scans for and syncs to the periodic advertising.
+
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 simulation_id="per_adv"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 10 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=10
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -35,7 +24,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_adv_periodic_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=20e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_conn.sh b/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_conn.sh
index 70dbdb101b1..de535d78727 100755
--- a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_conn.sh
+++ b/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_conn.sh
@@ -4,23 +4,12 @@
 
 # Basic periodic advertising sync test: an advertiser advertises with periodic
 # advertising, and a scanner scans for and syncs to the periodic advertising.
+
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 simulation_id="per_adv_conn"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 10 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=10
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -35,7 +24,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_adv_periodic_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=20e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_conn_privacy.sh b/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_conn_privacy.sh
index eede26ce116..d7d2ad91414 100755
--- a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_conn_privacy.sh
+++ b/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_conn_privacy.sh
@@ -4,23 +4,12 @@
 
 # Basic periodic advertising sync test: an advertiser advertises with periodic
 # advertising, and a scanner scans for and syncs to the periodic advertising.
+
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 simulation_id="per_adv_conn_privacy"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 10 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=10
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -35,7 +24,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_adv_periodic_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=20e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_long_data.sh b/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_long_data.sh
index 6b4e65438bc..7cac7527c99 100755
--- a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_long_data.sh
+++ b/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_long_data.sh
@@ -4,23 +4,12 @@
 
 # Basic periodic advertising sync test: an advertiser advertises with periodic
 # advertising, and a scanner scans for and syncs to the periodic advertising.
+
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 simulation_id="per_adv_long_data"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 10 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=10
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -35,7 +24,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_adv_periodic_prj_long_data_conf
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=20e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/adv/resume/test_scripts/_env.sh b/tests/bsim/bluetooth/host/adv/resume/test_scripts/_env.sh
index 98dff68bc08..ccd11480a19 100755
--- a/tests/bsim/bluetooth/host/adv/resume/test_scripts/_env.sh
+++ b/tests/bsim/bluetooth/host/adv/resume/test_scripts/_env.sh
@@ -4,8 +4,6 @@
 set -eu
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
 test_name="$(basename "$(realpath "$bash_source_dir/..")")"
 bsim_bin="${BSIM_OUT_PATH}/bin"
 BOARD="${BOARD:-nrf52_bsim}"
diff --git a/tests/bsim/bluetooth/host/adv/resume/test_scripts/run_adv_resume.sh b/tests/bsim/bluetooth/host/adv/resume/test_scripts/run_adv_resume.sh
index 8d00beddf0a..ee9d971fb23 100755
--- a/tests/bsim/bluetooth/host/adv/resume/test_scripts/run_adv_resume.sh
+++ b/tests/bsim/bluetooth/host/adv/resume/test_scripts/run_adv_resume.sh
@@ -5,25 +5,12 @@
 set -eu
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
-# Read variable definitions output by _env.sh
 source "${bash_source_dir}/_env.sh"
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 
 simulation_id="${test_name}"
 verbosity_level=2
-process_ids=""
-exit_code=0
-
-function Execute() {
-    if [ ! -f $1 ]; then
-        echo -e "  \e[91m$(pwd)/$(basename $1) cannot be found (did you forget to\
- compile it?)\e[39m"
-        exit 1
-    fi
-    timeout 30 $@ &
-    process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
+EXECUTE_TIMEOUT=30
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -43,7 +30,4 @@ Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
 # gdb --args "$test_exe" \
 #     -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -RealEncryption=1
 
-for process_id in $process_ids; do
-    wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/adv/resume/test_scripts/run_adv_resume_2.sh b/tests/bsim/bluetooth/host/adv/resume/test_scripts/run_adv_resume_2.sh
index c7f37565627..b7f29d1b05c 100755
--- a/tests/bsim/bluetooth/host/adv/resume/test_scripts/run_adv_resume_2.sh
+++ b/tests/bsim/bluetooth/host/adv/resume/test_scripts/run_adv_resume_2.sh
@@ -5,25 +5,12 @@
 set -eu
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
-# Read variable definitions output by _env.sh
 source "${bash_source_dir}/_env.sh"
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 
 simulation_id="${test_name}_2"
 verbosity_level=2
-process_ids=""
-exit_code=0
-
-function Execute() {
-    if [ ! -f $1 ]; then
-        echo -e "  \e[91m$(pwd)/$(basename $1) cannot be found (did you forget to\
- compile it?)\e[39m"
-        exit 1
-    fi
-    timeout 30 $@ &
-    process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
+EXECUTE_TIMEOUT=30
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -36,7 +23,4 @@ Execute "$test_2_exe" \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s="${simulation_id}" \
     -D=2 -sim_length=10e6 $@
 
-for process_id in $process_ids; do
-    wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/eatt/tests_scripts/autoconnect.sh b/tests/bsim/bluetooth/host/att/eatt/tests_scripts/autoconnect.sh
index 3aa2c68bee6..ac420c136e7 100755
--- a/tests/bsim/bluetooth/host/att/eatt/tests_scripts/autoconnect.sh
+++ b/tests/bsim/bluetooth/host/att/eatt/tests_scripts/autoconnect.sh
@@ -2,23 +2,11 @@
 # Copyright (c) 2022 Nordic Semiconductor
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 simulation_id="connection"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 120 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=120
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -31,7 +19,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_att_eatt_prj_autoconnect_conf \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=200e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/eatt/tests_scripts/collision.sh b/tests/bsim/bluetooth/host/att/eatt/tests_scripts/collision.sh
index eae7e1e9966..75da68b029b 100755
--- a/tests/bsim/bluetooth/host/att/eatt/tests_scripts/collision.sh
+++ b/tests/bsim/bluetooth/host/att/eatt/tests_scripts/collision.sh
@@ -2,23 +2,11 @@
 # Copyright (c) 2022 Nordic Semiconductor
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 simulation_id="collision"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 120 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=120
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -31,7 +19,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_att_eatt_prj_collision_conf \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=200e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/eatt/tests_scripts/multiple_conn.sh b/tests/bsim/bluetooth/host/att/eatt/tests_scripts/multiple_conn.sh
index d5f3482885d..5cc4ec693a0 100755
--- a/tests/bsim/bluetooth/host/att/eatt/tests_scripts/multiple_conn.sh
+++ b/tests/bsim/bluetooth/host/att/eatt/tests_scripts/multiple_conn.sh
@@ -2,23 +2,11 @@
 # Copyright (c) 2022 Nordic Semiconductor
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 simulation_id="multiple_conn"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 120 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=120
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -31,7 +19,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_att_eatt_prj_multiple_conn_conf
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=200e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/eatt/tests_scripts/reconfigure.sh b/tests/bsim/bluetooth/host/att/eatt/tests_scripts/reconfigure.sh
index 599329ce2b5..2a9000b2429 100755
--- a/tests/bsim/bluetooth/host/att/eatt/tests_scripts/reconfigure.sh
+++ b/tests/bsim/bluetooth/host/att/eatt/tests_scripts/reconfigure.sh
@@ -2,23 +2,11 @@
 # Copyright (c) 2022 Nordic Semiconductor
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 simulation_id="reconfigure"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 120 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=120
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -31,7 +19,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_att_eatt_prj_autoconnect_conf \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=60e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/eatt_notif/test_scripts/eatt_notif.sh b/tests/bsim/bluetooth/host/att/eatt_notif/test_scripts/eatt_notif.sh
index 0d3bcb2967d..3385b6fe6dc 100755
--- a/tests/bsim/bluetooth/host/att/eatt_notif/test_scripts/eatt_notif.sh
+++ b/tests/bsim/bluetooth/host/att/eatt_notif/test_scripts/eatt_notif.sh
@@ -4,23 +4,11 @@
 
 # EATT notification reliability test
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 simulation_id="eatt_notif"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 120 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=120
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -33,7 +21,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_att_eatt_notif_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=60e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/mtu_update/test_scripts/_compile.sh b/tests/bsim/bluetooth/host/att/mtu_update/test_scripts/_compile.sh
index d6498bd2121..c6f204574bd 100755
--- a/tests/bsim/bluetooth/host/att/mtu_update/test_scripts/_compile.sh
+++ b/tests/bsim/bluetooth/host/att/mtu_update/test_scripts/_compile.sh
@@ -6,10 +6,7 @@ set -eu
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
 # Read variable definitions output by _env.sh
-source <("${bash_source_dir}/_env.sh")
-
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
+source "${bash_source_dir}/_env.sh"
 : "${BSIM_COMPONENTS_PATH:?BSIM_COMPONENTS_PATH must be defined}"
 : "${ZEPHYR_BASE:?ZEPHYR_BASE must be defined}"
 
diff --git a/tests/bsim/bluetooth/host/att/mtu_update/test_scripts/_env.sh b/tests/bsim/bluetooth/host/att/mtu_update/test_scripts/_env.sh
index 30ba589fe88..8d101eabcdd 100755
--- a/tests/bsim/bluetooth/host/att/mtu_update/test_scripts/_env.sh
+++ b/tests/bsim/bluetooth/host/att/mtu_update/test_scripts/_env.sh
@@ -13,18 +13,3 @@ BOARD="${BOARD:-nrf52_bsim}"
 simulation_id="$test_name"
 central_exe="${bsim_bin}/bs_${BOARD}_tests_bsim_bluetooth_host_att_mtu_update_prj_conf"
 peripheral_exe="${central_exe}"
-
-function print_var {
-	# Print a shell-sourceable variable definition.
-	local var_name="$1"
-	local var_repr="${!var_name@Q}"
-	echo "$var_name=$var_repr"
-}
-
-print_var test_name
-print_var bsim_bin
-print_var verbosity_level
-print_var BOARD
-print_var simulation_id
-print_var central_exe
-print_var peripheral_exe
diff --git a/tests/bsim/bluetooth/host/att/mtu_update/test_scripts/run_test.sh b/tests/bsim/bluetooth/host/att/mtu_update/test_scripts/run_test.sh
index 896508f9ed1..087aa9385d4 100755
--- a/tests/bsim/bluetooth/host/att/mtu_update/test_scripts/run_test.sh
+++ b/tests/bsim/bluetooth/host/att/mtu_update/test_scripts/run_test.sh
@@ -5,23 +5,12 @@
 set -eu
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
-# Read variable definitions output by _env.sh
-source <("${bash_source_dir}/_env.sh")
+source "${bash_source_dir}/_env.sh"
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 
-process_ids=""
-exit_code=0
-
-function Execute() {
-    if [ ! -f $1 ]; then
-        echo -e "  \e[91m$(pwd)/$(basename $1) cannot be found (did you forget to\
- compile it?)\e[39m"
-        exit 1
-    fi
-    timeout 30 $@ &
-    process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
+simulation_id="$test_name"
+verbosity_level=2
+EXECUTE_TIMEOUT=30
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -34,7 +23,4 @@ Execute "$peripheral_exe" \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
     -D=2 -sim_length=60e6 $@
 
-for process_id in $process_ids; do
-    wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/compile.sh b/tests/bsim/bluetooth/host/compile.sh
index eada545d8b5..3a06e04165e 100755
--- a/tests/bsim/bluetooth/host/compile.sh
+++ b/tests/bsim/bluetooth/host/compile.sh
@@ -7,13 +7,12 @@
 #set -x #uncomment this line for debugging
 set -ue
 
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
 : "${BSIM_COMPONENTS_PATH:?BSIM_COMPONENTS_PATH must be defined}"
 : "${ZEPHYR_BASE:?ZEPHYR_BASE must be set to point to the zephyr root\
  directory}"
 
 WORK_DIR="${WORK_DIR:-${ZEPHYR_BASE}/bsim_out}"
-BOARD="${BOARD:-nrf52_bsim}"
+
 BOARD_ROOT="${BOARD_ROOT:-${ZEPHYR_BASE}}"
 
 mkdir -p ${WORK_DIR}
diff --git a/tests/bsim/bluetooth/host/gatt/caching/test_scripts/_run_test.sh b/tests/bsim/bluetooth/host/gatt/caching/test_scripts/_run_test.sh
index 478febd7484..932e7c23a76 100755
--- a/tests/bsim/bluetooth/host/gatt/caching/test_scripts/_run_test.sh
+++ b/tests/bsim/bluetooth/host/gatt/caching/test_scripts/_run_test.sh
@@ -2,24 +2,10 @@
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 verbosity_level=2
-process_ids=""
-exit_code=0
-
-function Execute() {
-    if [ ! -f $1 ]; then
-        echo -e "  \e[91m$(pwd)/$(basename $1) cannot be found (did you forget to\
- compile it?)\e[39m"
-        exit 1
-    fi
-    timeout 120 $@ &
-    process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=120
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -32,7 +18,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_gatt_caching_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
     -D=2 -sim_length=60e6 $@
 
-for process_id in $process_ids; do
-    wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/general/test_scripts/gatt.sh b/tests/bsim/bluetooth/host/gatt/general/test_scripts/gatt.sh
index 53be981b117..eb6f22ace1a 100755
--- a/tests/bsim/bluetooth/host/gatt/general/test_scripts/gatt.sh
+++ b/tests/bsim/bluetooth/host/gatt/general/test_scripts/gatt.sh
@@ -5,23 +5,12 @@
 # Basic GATT test: A central acting as a GATT client scans for and connects
 # to a peripheral acting as a GATT server. The GATT client will then attempt
 # to write and read to and from a few GATT characteristics.
+
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 simulation_id="gatt"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 120 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=120
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -34,7 +23,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_gatt_general_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=60e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/_run_test.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/_run_test.sh
index bd79acb3fdd..4d02d42a00c 100755
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/_run_test.sh
+++ b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/_run_test.sh
@@ -1,25 +1,12 @@
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
+set -eu
+
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 
 verbosity_level=2
-process_ids=""
-exit_code=0
-
-function Execute() {
-    if [ ! -f $1 ]; then
-        echo -e "  \e[91m$(pwd)/$(basename $1) cannot be found (did you forget to\
- compile it?)\e[39m"
-        exit 1
-    fi
-    timeout 30 $@ &
-    process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=30
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -32,7 +19,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_gatt_notify_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
     -D=2 -sim_length=60e6 $@
 
-for process_id in $process_ids; do
-    wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_enhanced.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_enhanced.sh
index 68cf9409994..d8516fa35de 100755
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_enhanced.sh
+++ b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_enhanced.sh
@@ -1,4 +1,3 @@
-
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
@@ -7,4 +6,3 @@ simulation_id="gatt_notify_enhanced_enhanced" \
     server_id="gatt_server_enhanced" \
     client_id="gatt_client_enhanced" \
     $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
-
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_mixed.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_mixed.sh
index 75a4b9d83c9..4d82408fb91 100755
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_mixed.sh
+++ b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_mixed.sh
@@ -1,4 +1,3 @@
-
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
@@ -7,4 +6,3 @@ simulation_id="gatt_notify_enhanced_mixed" \
     server_id="gatt_server_enhanced" \
     client_id="gatt_client_mixed" \
     $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
-
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_none.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_none.sh
index e89b16ca20e..13a4e67e1f0 100755
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_none.sh
+++ b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_none.sh
@@ -1,4 +1,3 @@
-
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
@@ -7,4 +6,3 @@ simulation_id="gatt_notify_enhanced_none" \
     server_id="gatt_server_enhanced" \
     client_id="gatt_client_none" \
     $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
-
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_unenhanced.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_unenhanced.sh
index 5cc85731633..480fbabf467 100755
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_unenhanced.sh
+++ b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_unenhanced.sh
@@ -1,4 +1,3 @@
-
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
@@ -7,4 +6,3 @@ simulation_id="gatt_notify_enhanced_unenhanced" \
     server_id="gatt_server_enhanced" \
     client_id="gatt_client_unenhanced" \
     $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
-
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_enhanced.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_enhanced.sh
index a4ecf9d429b..16827e3988b 100755
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_enhanced.sh
+++ b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_enhanced.sh
@@ -1,4 +1,3 @@
-
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
@@ -7,4 +6,3 @@ simulation_id="gatt_notify_mixed_enhanced" \
     server_id="gatt_server_mixed" \
     client_id="gatt_client_enhanced" \
     $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
-
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_mixed.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_mixed.sh
index a9f38d8f37f..ed0a3e4f61e 100755
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_mixed.sh
+++ b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_mixed.sh
@@ -1,4 +1,3 @@
-
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
@@ -7,4 +6,3 @@ simulation_id="gatt_notify_mixed_mixed" \
     server_id="gatt_server_mixed" \
     client_id="gatt_client_mixed" \
     $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
-
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_none.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_none.sh
index 80afe822cfd..944d91f575e 100755
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_none.sh
+++ b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_none.sh
@@ -1,4 +1,3 @@
-
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
@@ -7,4 +6,3 @@ simulation_id="gatt_notify_mixed_none" \
     server_id="gatt_server_mixed" \
     client_id="gatt_client_none" \
     $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
-
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_unenhanced.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_unenhanced.sh
index 9ff73b2de4b..25d0f983945 100755
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_unenhanced.sh
+++ b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_unenhanced.sh
@@ -1,4 +1,3 @@
-
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
@@ -7,4 +6,3 @@ simulation_id="gatt_notify_mixed_unenhanced" \
     server_id="gatt_server_mixed" \
     client_id="gatt_client_unenhanced" \
     $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
-
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_enhanced.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_enhanced.sh
index 74eedd15ddc..514b8508ea9 100755
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_enhanced.sh
+++ b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_enhanced.sh
@@ -1,4 +1,3 @@
-
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
@@ -7,4 +6,3 @@ simulation_id="gatt_notify_none_enhanced" \
     server_id="gatt_server_none" \
     client_id="gatt_client_enhanced" \
     $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
-
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_mixed.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_mixed.sh
index 02541c6db74..7c74575a9f9 100755
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_mixed.sh
+++ b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_mixed.sh
@@ -1,4 +1,3 @@
-
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
@@ -7,4 +6,3 @@ simulation_id="gatt_notify_none_mixed" \
     server_id="gatt_server_none" \
     client_id="gatt_client_mixed" \
     $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
-
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_none.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_none.sh
index 6642f8ed2b5..1d988718f24 100755
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_none.sh
+++ b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_none.sh
@@ -1,4 +1,3 @@
-
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
@@ -7,4 +6,3 @@ simulation_id="gatt_notify_none_none" \
     server_id="gatt_server_none" \
     client_id="gatt_client_none" \
     $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
-
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_unenhanced.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_unenhanced.sh
index 2f2764186c7..9c8425e376f 100755
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_unenhanced.sh
+++ b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_unenhanced.sh
@@ -1,4 +1,3 @@
-
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
@@ -7,4 +6,3 @@ simulation_id="gatt_notify_none_unenhanced" \
     server_id="gatt_server_none" \
     client_id="gatt_client_unenhanced" \
     $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
-
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_enhanced.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_enhanced.sh
index ab91b23437d..4c7c499f166 100755
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_enhanced.sh
+++ b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_enhanced.sh
@@ -1,4 +1,3 @@
-
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
@@ -7,4 +6,3 @@ simulation_id="gatt_notify_unenhanced_enhanced" \
     server_id="gatt_server_unenhanced" \
     client_id="gatt_client_enhanced" \
     $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
-
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_mixed.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_mixed.sh
index 57063ac272b..4a0fdef0243 100755
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_mixed.sh
+++ b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_mixed.sh
@@ -1,4 +1,3 @@
-
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
@@ -7,4 +6,3 @@ simulation_id="gatt_notify_unenhanced_mixed" \
     server_id="gatt_server_unenhanced" \
     client_id="gatt_client_mixed" \
     $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
-
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_none.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_none.sh
index df360db4e5e..5b705823e72 100755
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_none.sh
+++ b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_none.sh
@@ -1,4 +1,3 @@
-
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
@@ -7,4 +6,3 @@ simulation_id="gatt_notify_unenhanced_none" \
     server_id="gatt_server_unenhanced" \
     client_id="gatt_client_none" \
     $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
-
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_unenhanced.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_unenhanced.sh
index 7b624969d5d..7da2f2ae39b 100755
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_unenhanced.sh
+++ b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_unenhanced.sh
@@ -1,4 +1,3 @@
-
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
@@ -7,4 +6,3 @@ simulation_id="gatt_notify_unenhanced_unenhanced" \
     server_id="gatt_server_unenhanced" \
     client_id="gatt_client_unenhanced" \
     $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
-
diff --git a/tests/bsim/bluetooth/host/gatt/notify_multiple/test_scripts/_notify-debug.sh b/tests/bsim/bluetooth/host/gatt/notify_multiple/test_scripts/_notify-debug.sh
index 29ac8e41794..08de518bec4 100755
--- a/tests/bsim/bluetooth/host/gatt/notify_multiple/test_scripts/_notify-debug.sh
+++ b/tests/bsim/bluetooth/host/gatt/notify_multiple/test_scripts/_notify-debug.sh
@@ -11,10 +11,8 @@
 # GDB can be run on the two devices at the same time without issues, just append
 # `debug` when running the script.
 
-
 simulation_id="notify_multiple"
 verbosity_level=2
-process_ids=""; exit_code=0
 
 : "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
 
diff --git a/tests/bsim/bluetooth/host/gatt/notify_multiple/test_scripts/notify.sh b/tests/bsim/bluetooth/host/gatt/notify_multiple/test_scripts/notify.sh
index ee243473bea..b4cf3fd91a3 100755
--- a/tests/bsim/bluetooth/host/gatt/notify_multiple/test_scripts/notify.sh
+++ b/tests/bsim/bluetooth/host/gatt/notify_multiple/test_scripts/notify.sh
@@ -1,24 +1,13 @@
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
+set -eu
+
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 
 simulation_id="notify_multiple"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 120 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=120
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -31,7 +20,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_gatt_notify_multiple_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=60e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/settings/test_scripts/_compile.sh b/tests/bsim/bluetooth/host/gatt/settings/test_scripts/_compile.sh
index 1805af4f425..cd43f722c83 100755
--- a/tests/bsim/bluetooth/host/gatt/settings/test_scripts/_compile.sh
+++ b/tests/bsim/bluetooth/host/gatt/settings/test_scripts/_compile.sh
@@ -1,8 +1,8 @@
 #!/usr/bin/env bash
 # Copyright 2023 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
-
 set -eu
+
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
 # Read variable definitions output by _env.sh
diff --git a/tests/bsim/bluetooth/host/gatt/settings/test_scripts/_env.sh b/tests/bsim/bluetooth/host/gatt/settings/test_scripts/_env.sh
index 348f8ec6d42..22e1f9e6518 100755
--- a/tests/bsim/bluetooth/host/gatt/settings/test_scripts/_env.sh
+++ b/tests/bsim/bluetooth/host/gatt/settings/test_scripts/_env.sh
@@ -4,8 +4,6 @@
 set -eu
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
 test_name="$(basename "$(realpath "$bash_source_dir/..")")"
 bsim_bin="${BSIM_OUT_PATH}/bin"
 BOARD="${BOARD:-nrf52_bsim}"
diff --git a/tests/bsim/bluetooth/host/gatt/settings/test_scripts/run_gatt_settings.sh b/tests/bsim/bluetooth/host/gatt/settings/test_scripts/run_gatt_settings.sh
index dfa2fa9fe0e..269ecbc9072 100755
--- a/tests/bsim/bluetooth/host/gatt/settings/test_scripts/run_gatt_settings.sh
+++ b/tests/bsim/bluetooth/host/gatt/settings/test_scripts/run_gatt_settings.sh
@@ -1,27 +1,16 @@
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
-
 set -eu
+
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
 source "${bash_source_dir}/_env.sh"
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 simulation_id="${test_name}"
 verbosity_level=2
-process_ids=""
-exit_code=0
-
-function Execute() {
-    if [ ! -f $1 ]; then
-        echo -e "  \e[91m$(pwd)/$(basename $1) cannot be found (did you forget to\
- compile it?)\e[39m"
-        exit 1
-    fi
-    $@ &
-    process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
+EXECUTE_TIMEOUT=30
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -57,7 +46,4 @@ Execute "$test_exe" -v=${verbosity_level} \
 Execute "$test_exe" -v=${verbosity_level} \
     -s="${simulation_id}" -d=7 -testid=client -RealEncryption=1 -argstest 0 0 "client"
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/settings/test_scripts/run_gatt_settings_2.sh b/tests/bsim/bluetooth/host/gatt/settings/test_scripts/run_gatt_settings_2.sh
index fb6d4e6f45a..873a0e670b0 100755
--- a/tests/bsim/bluetooth/host/gatt/settings/test_scripts/run_gatt_settings_2.sh
+++ b/tests/bsim/bluetooth/host/gatt/settings/test_scripts/run_gatt_settings_2.sh
@@ -1,27 +1,16 @@
 #!/usr/bin/env bash
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
-
 set -eu
+
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
 source "${bash_source_dir}/_env.sh"
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 simulation_id="${test_name}_2"
 verbosity_level=2
-process_ids=""
-exit_code=0
-
-function Execute() {
-    if [ ! -f $1 ]; then
-        echo -e "  \e[91m$(pwd)/$(basename $1) cannot be found (did you forget to\
- compile it?)\e[39m"
-        exit 1
-    fi
-    $@ &
-    process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
+EXECUTE_TIMEOUT=120
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -57,7 +46,4 @@ Execute "$test_2_exe" -v=${verbosity_level} \
 Execute "$test_2_exe" -v=${verbosity_level} \
     -s="${simulation_id}" -d=7 -testid=client -RealEncryption=1 -argstest 0 0 "client_2"
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/write/tests_scripts/gatt_write.sh b/tests/bsim/bluetooth/host/gatt/write/tests_scripts/gatt_write.sh
index 30c05ea3a8a..749e6a6425d 100755
--- a/tests/bsim/bluetooth/host/gatt/write/tests_scripts/gatt_write.sh
+++ b/tests/bsim/bluetooth/host/gatt/write/tests_scripts/gatt_write.sh
@@ -2,24 +2,12 @@
 # Copyright 2018 Oticon A/S
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 # Multiple connection between two devices with multiple peripheral identity
 simulation_id="gatt_write"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 60 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=60
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -32,7 +20,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_gatt_write_prj_conf\
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=60e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/l2cap/general/tests_scripts/l2cap.sh b/tests/bsim/bluetooth/host/l2cap/general/tests_scripts/l2cap.sh
index 54cf6c75615..adfae72c459 100755
--- a/tests/bsim/bluetooth/host/l2cap/general/tests_scripts/l2cap.sh
+++ b/tests/bsim/bluetooth/host/l2cap/general/tests_scripts/l2cap.sh
@@ -2,24 +2,12 @@
 # Copyright (c) 2022 Nordic Semiconductor
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 # EATT test
 simulation_id="l2cap_ecred"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 120 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=120
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -32,7 +20,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_l2cap_general_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=60e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/l2cap/stress/tests_scripts/l2cap.sh b/tests/bsim/bluetooth/host/l2cap/stress/tests_scripts/l2cap.sh
index e556fad38e2..1ef8cdc9d15 100755
--- a/tests/bsim/bluetooth/host/l2cap/stress/tests_scripts/l2cap.sh
+++ b/tests/bsim/bluetooth/host/l2cap/stress/tests_scripts/l2cap.sh
@@ -2,25 +2,12 @@
 # Copyright (c) 2022 Nordic Semiconductor
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 # EATT test
 simulation_id="l2cap_stress"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  # timeout 30 $@ & process_ids="$process_ids $!"
-  $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=120
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -37,7 +24,4 @@ Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=6 -testid=per
 
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} -D=7 -sim_length=270e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/l2cap/userdata/tests_scripts/l2cap.sh b/tests/bsim/bluetooth/host/l2cap/userdata/tests_scripts/l2cap.sh
index 05637864fe6..6700f12781b 100755
--- a/tests/bsim/bluetooth/host/l2cap/userdata/tests_scripts/l2cap.sh
+++ b/tests/bsim/bluetooth/host/l2cap/userdata/tests_scripts/l2cap.sh
@@ -2,25 +2,11 @@
 # Copyright (c) 2022 Nordic Semiconductor
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 simulation_id="l2cap_ecred_userdata"
 verbosity_level=2
-process_ids=""
-exit_code=0
-
-function Execute() {
-    if [ ! -f $1 ]; then
-        echo -e "  \e[91m$(pwd)/$(basename $1) cannot be found (did you forget to\
- compile it?)\e[39m"
-        exit 1
-    fi
-    timeout 120 $@ &
-    process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=120
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -33,7 +19,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_l2cap_userdata_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
     -D=2 -sim_length=30e6 $@
 
-for process_id in $process_ids; do
-    wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/misc/disable/tests_scripts/disable.sh b/tests/bsim/bluetooth/host/misc/disable/tests_scripts/disable.sh
index b3e390f82d5..8fb3bfa648e 100755
--- a/tests/bsim/bluetooth/host/misc/disable/tests_scripts/disable.sh
+++ b/tests/bsim/bluetooth/host/misc/disable/tests_scripts/disable.sh
@@ -2,24 +2,12 @@
 # Copyright (c) 2022 Nordic Semiconductor
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 # Disable test: bt_enable and bt_disable are called in a loop.
 simulation_id="disable_test"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 120 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=120
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -29,7 +17,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_misc_disable_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=1 -sim_length=60e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/misc/disable/tests_scripts/disable_with_gatt.sh b/tests/bsim/bluetooth/host/misc/disable/tests_scripts/disable_with_gatt.sh
index fef45b2f61d..5c3d8916c6b 100755
--- a/tests/bsim/bluetooth/host/misc/disable/tests_scripts/disable_with_gatt.sh
+++ b/tests/bsim/bluetooth/host/misc/disable/tests_scripts/disable_with_gatt.sh
@@ -2,27 +2,15 @@
 # Copyright 2022 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 # Disable with GATT test: A central acting as a GATT client scans for and connects
 # to a peripheral acting as a GATT server. The GATT client will then attempt
 # to write and read to and from a few GATT characteristics. Both the central and
 # peripheral then disable bluetooth and the test repeats.
 simulation_id="disable_with_gatt"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 120 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=120
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -35,7 +23,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_misc_disable_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=600e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/misc/multiple_id/tests_scripts/multiple.sh b/tests/bsim/bluetooth/host/misc/multiple_id/tests_scripts/multiple.sh
index e8c24354d05..c5e1cfdd242 100755
--- a/tests/bsim/bluetooth/host/misc/multiple_id/tests_scripts/multiple.sh
+++ b/tests/bsim/bluetooth/host/misc/multiple_id/tests_scripts/multiple.sh
@@ -2,24 +2,12 @@
 # Copyright 2018 Oticon A/S
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 # Multiple connection between two devices with multiple peripheral identity
 simulation_id="multiple"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 1800 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=1800
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -32,7 +20,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_host_misc_multiple_id_prj_conf\
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=4500e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/privacy/central/test_scripts/_compile.sh b/tests/bsim/bluetooth/host/privacy/central/test_scripts/_compile.sh
index e7a3d65a2a4..ccdf03b687f 100755
--- a/tests/bsim/bluetooth/host/privacy/central/test_scripts/_compile.sh
+++ b/tests/bsim/bluetooth/host/privacy/central/test_scripts/_compile.sh
@@ -5,15 +5,12 @@
 set -eu
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
-# Read variable definitions output by _env.sh
-source <("${bash_source_dir}/_env.sh")
-
+source "${bash_source_dir}/_env.sh"
 
 : "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
 : "${BSIM_COMPONENTS_PATH:?BSIM_COMPONENTS_PATH must be defined}"
 : "${ZEPHYR_BASE:?ZEPHYR_BASE must be defined}"
 
-
 WORK_DIR="${WORK_DIR:-${ZEPHYR_BASE}/bsim_bt_out}"
 BOARD="${BOARD:-nrf52_bsim}"
 BOARD_ROOT="${BOARD_ROOT:-${ZEPHYR_BASE}}"
diff --git a/tests/bsim/bluetooth/host/privacy/central/test_scripts/_env.sh b/tests/bsim/bluetooth/host/privacy/central/test_scripts/_env.sh
index 44e2f07ee4c..18c60bb7c45 100755
--- a/tests/bsim/bluetooth/host/privacy/central/test_scripts/_env.sh
+++ b/tests/bsim/bluetooth/host/privacy/central/test_scripts/_env.sh
@@ -5,8 +5,6 @@
 set -eu
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
 test_name="$(basename "$(realpath "$bash_source_dir/..")")"
 bsim_bin="${BSIM_OUT_PATH}/bin"
 verbosity_level=2
@@ -14,18 +12,3 @@ BOARD="${BOARD:-nrf52_bsim}"
 simulation_id="$test_name"
 central_exe="${bsim_bin}/bs_${BOARD}_tests_bsim_bluetooth_host_privacy_central_prj_conf"
 peripheral_exe="${central_exe}"
-
-function print_var {
-	# Print a shell-sourceable variable definition.
-	local var_name="$1"
-	local var_repr="${!var_name@Q}"
-	echo "$var_name=$var_repr"
-}
-
-print_var test_name
-print_var bsim_bin
-print_var verbosity_level
-print_var BOARD
-print_var simulation_id
-print_var central_exe
-print_var peripheral_exe
diff --git a/tests/bsim/bluetooth/host/privacy/central/test_scripts/run_test.sh b/tests/bsim/bluetooth/host/privacy/central/test_scripts/run_test.sh
index e2a80ba51f4..3ba95eab78c 100755
--- a/tests/bsim/bluetooth/host/privacy/central/test_scripts/run_test.sh
+++ b/tests/bsim/bluetooth/host/privacy/central/test_scripts/run_test.sh
@@ -1,27 +1,14 @@
 #!/usr/bin/env bash
 # Copyright 2023 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
-
 set -eu
+
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
-# Read variable definitions output by _env.sh
-source <("${bash_source_dir}/_env.sh")
+source "${bash_source_dir}/_env.sh"
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 
-process_ids=""
-exit_code=0
-
-function Execute() {
-    if [ ! -f $1 ]; then
-        echo -e "  \e[91m$(pwd)/$(basename $1) cannot be found (did you forget to\
- compile it?)\e[39m"
-        exit 1
-    fi
-    timeout 30 $@ &
-    process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
+EXECUTE_TIMEOUT=30
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -34,8 +21,4 @@ Execute "$peripheral_exe" \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
     -D=2 -sim_length=60e6 $@
 
-for process_id in $process_ids; do
-    wait $process_id || let "exit_code=$?"
-done
-
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/privacy/device/test_scripts/run_tests.sh b/tests/bsim/bluetooth/host/privacy/device/test_scripts/run_tests.sh
index 6c9ad8a0bbd..3a16a37c51d 100755
--- a/tests/bsim/bluetooth/host/privacy/device/test_scripts/run_tests.sh
+++ b/tests/bsim/bluetooth/host/privacy/device/test_scripts/run_tests.sh
@@ -5,23 +5,10 @@
 set -eu
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
-# Read variable definitions output by _env.sh
 source "${bash_source_dir}/_env.sh"
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 
-process_ids=""
-exit_code=0
-
-function Execute() {
-    if [ ! -f $1 ]; then
-        echo -e "  \e[91m$(pwd)/$(basename $1) cannot be found (did you forget to\
- compile it?)\e[39m"
-        exit 1
-    fi
-    timeout 30 $@ &
-    process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
+EXECUTE_TIMEOUT=30
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -75,11 +62,4 @@ for args in ${TEST_ARGS[@]}; do
     done
 done
 
-for process_id in $process_ids; do
-    wait $process_id || let "exit_code=$?"
-    if [ ${exit_code} -ne 0 ]; then
-        exit_code=1
-    fi
-done
-
-exit $exit_code # the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/_compile.sh b/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/_compile.sh
index e7a3d65a2a4..2b3b54a1002 100755
--- a/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/_compile.sh
+++ b/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/_compile.sh
@@ -6,7 +6,7 @@ set -eu
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
 # Read variable definitions output by _env.sh
-source <("${bash_source_dir}/_env.sh")
+source "${bash_source_dir}/_env.sh"
 
 
 : "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
diff --git a/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/_env.sh b/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/_env.sh
index ac2d2d5888e..2e3593a3df4 100755
--- a/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/_env.sh
+++ b/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/_env.sh
@@ -5,8 +5,6 @@
 set -eu
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
 test_name="$(basename "$(realpath "$bash_source_dir/..")")"
 bsim_bin="${BSIM_OUT_PATH}/bin"
 verbosity_level=2
@@ -14,18 +12,3 @@ BOARD="${BOARD:-nrf52_bsim}"
 simulation_id="$test_name"
 central_exe="${bsim_bin}/bs_${BOARD}_tests_bsim_bluetooth_host_privacy_peripheral_prj_conf"
 peripheral_exe="${central_exe}"
-
-function print_var {
-	# Print a shell-sourceable variable definition.
-	local var_name="$1"
-	local var_repr="${!var_name@Q}"
-	echo "$var_name=$var_repr"
-}
-
-print_var test_name
-print_var bsim_bin
-print_var verbosity_level
-print_var BOARD
-print_var simulation_id
-print_var central_exe
-print_var peripheral_exe
diff --git a/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/run_test.sh b/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/run_test.sh
index 8a28a5be46a..30c4f6bee15 100755
--- a/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/run_test.sh
+++ b/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/run_test.sh
@@ -5,23 +5,10 @@
 set -eu
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
-# Read variable definitions output by _env.sh
-source <("${bash_source_dir}/_env.sh")
+source "${bash_source_dir}/_env.sh"
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 
-process_ids=""
-exit_code=0
-
-function Execute() {
-    if [ ! -f $1 ]; then
-        echo -e "  \e[91m$(pwd)/$(basename $1) cannot be found (did you forget to\
- compile it?)\e[39m"
-        exit 1
-    fi
-    timeout 30 $@ &
-    process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
+EXECUTE_TIMEOUT=30
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -34,8 +21,4 @@ Execute "$peripheral_exe" \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
     -D=2 -sim_length=120e6 $@
 
-for process_id in $process_ids; do
-    wait $process_id || let "exit_code=$?"
-done
-
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/security/bond_overwrite_allowed/test_scripts/_compile.sh b/tests/bsim/bluetooth/host/security/bond_overwrite_allowed/test_scripts/_compile.sh
index 33be3b19feb..2b722ca2a69 100755
--- a/tests/bsim/bluetooth/host/security/bond_overwrite_allowed/test_scripts/_compile.sh
+++ b/tests/bsim/bluetooth/host/security/bond_overwrite_allowed/test_scripts/_compile.sh
@@ -6,10 +6,8 @@ set -eu
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
 # Read variable definitions output by _env.sh
-source <("${bash_source_dir}/_env.sh")
+source "${bash_source_dir}/_env.sh"
 
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
 : "${BSIM_COMPONENTS_PATH:?BSIM_COMPONENTS_PATH must be defined}"
 : "${ZEPHYR_BASE:?ZEPHYR_BASE must be defined}"
 
diff --git a/tests/bsim/bluetooth/host/security/bond_overwrite_allowed/test_scripts/_env.sh b/tests/bsim/bluetooth/host/security/bond_overwrite_allowed/test_scripts/_env.sh
index f0005e331cc..102e63a5ef1 100755
--- a/tests/bsim/bluetooth/host/security/bond_overwrite_allowed/test_scripts/_env.sh
+++ b/tests/bsim/bluetooth/host/security/bond_overwrite_allowed/test_scripts/_env.sh
@@ -13,18 +13,3 @@ BOARD="${BOARD:-nrf52_bsim}"
 simulation_id="$test_name"
 central_exe="${bsim_bin}/bs_${BOARD}_tests_bsim_bluetooth_host_${test_name}_prj_conf"
 peripheral_exe="${central_exe}"
-
-function print_var {
-	# Print a shell-sourceable variable definition.
-	local var_name="$1"
-	local var_repr="${!var_name@Q}"
-	echo "$var_name=$var_repr"
-}
-
-print_var test_name
-print_var bsim_bin
-print_var verbosity_level
-print_var BOARD
-print_var simulation_id
-print_var central_exe
-print_var peripheral_exe
diff --git a/tests/bsim/bluetooth/host/security/bond_overwrite_allowed/test_scripts/run_test.sh b/tests/bsim/bluetooth/host/security/bond_overwrite_allowed/test_scripts/run_test.sh
index fe5fcfdb194..3aecac00ee0 100755
--- a/tests/bsim/bluetooth/host/security/bond_overwrite_allowed/test_scripts/run_test.sh
+++ b/tests/bsim/bluetooth/host/security/bond_overwrite_allowed/test_scripts/run_test.sh
@@ -5,23 +5,10 @@
 set -eu
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
-# Read variable definitions output by _env.sh
-source <("${bash_source_dir}/_env.sh")
+source "${bash_source_dir}/_env.sh"
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 
-process_ids=""
-exit_code=0
-
-function Execute() {
-    if [ ! -f $1 ]; then
-        echo -e "  \e[91m$(pwd)/$(basename $1) cannot be found (did you forget to\
- compile it?)\e[39m"
-        exit 1
-    fi
-    timeout 30 $@ &
-    process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
+EXECUTE_TIMEOUT=30
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -34,7 +21,4 @@ Execute "$peripheral_exe" \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
     -D=2 -sim_length=60e6 $@
 
-for process_id in $process_ids; do
-    wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/security/bond_overwrite_denied/test_scripts/_compile.sh b/tests/bsim/bluetooth/host/security/bond_overwrite_denied/test_scripts/_compile.sh
index 33be3b19feb..2b722ca2a69 100755
--- a/tests/bsim/bluetooth/host/security/bond_overwrite_denied/test_scripts/_compile.sh
+++ b/tests/bsim/bluetooth/host/security/bond_overwrite_denied/test_scripts/_compile.sh
@@ -6,10 +6,8 @@ set -eu
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
 # Read variable definitions output by _env.sh
-source <("${bash_source_dir}/_env.sh")
+source "${bash_source_dir}/_env.sh"
 
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
 : "${BSIM_COMPONENTS_PATH:?BSIM_COMPONENTS_PATH must be defined}"
 : "${ZEPHYR_BASE:?ZEPHYR_BASE must be defined}"
 
diff --git a/tests/bsim/bluetooth/host/security/bond_overwrite_denied/test_scripts/run_test.sh b/tests/bsim/bluetooth/host/security/bond_overwrite_denied/test_scripts/run_test.sh
index fe5fcfdb194..6f00e23c70c 100755
--- a/tests/bsim/bluetooth/host/security/bond_overwrite_denied/test_scripts/run_test.sh
+++ b/tests/bsim/bluetooth/host/security/bond_overwrite_denied/test_scripts/run_test.sh
@@ -6,22 +6,10 @@ set -eu
 bash_source_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 
 # Read variable definitions output by _env.sh
-source <("${bash_source_dir}/_env.sh")
+source "${bash_source_dir}/_env.sh"
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 
-process_ids=""
-exit_code=0
-
-function Execute() {
-    if [ ! -f $1 ]; then
-        echo -e "  \e[91m$(pwd)/$(basename $1) cannot be found (did you forget to\
- compile it?)\e[39m"
-        exit 1
-    fi
-    timeout 30 $@ &
-    process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
+EXECUTE_TIMEOUT=30
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -34,7 +22,4 @@ Execute "$peripheral_exe" \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
     -D=2 -sim_length=60e6 $@
 
-for process_id in $process_ids; do
-    wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/ll/advx/tests_scripts/basic_advx.sh b/tests/bsim/bluetooth/ll/advx/tests_scripts/basic_advx.sh
index 056378febf3..0fc0a93a112 100755
--- a/tests/bsim/bluetooth/ll/advx/tests_scripts/basic_advx.sh
+++ b/tests/bsim/bluetooth/ll/advx/tests_scripts/basic_advx.sh
@@ -2,25 +2,13 @@
 # Copyright 2018 Oticon A/S
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 # Basic connection test: a central connects to a peripheral and expects a
 # notification, using the split controller (ULL LLL)
 simulation_id="basic_advx"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 120 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=120
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -33,7 +21,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_ll_advx_prj_conf\
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=60e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/ll/compile.sh b/tests/bsim/bluetooth/ll/compile.sh
index 8451406aa62..ff5b86d68c9 100755
--- a/tests/bsim/bluetooth/ll/compile.sh
+++ b/tests/bsim/bluetooth/ll/compile.sh
@@ -6,14 +6,12 @@
 
 #set -x #uncomment this line for debugging
 set -ue
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
 : "${BSIM_COMPONENTS_PATH:?BSIM_COMPONENTS_PATH must be defined}"
 : "${ZEPHYR_BASE:?ZEPHYR_BASE must be set to point to the zephyr root\
  directory}"
 
 WORK_DIR="${WORK_DIR:-${ZEPHYR_BASE}/bsim_out}"
-BOARD="${BOARD:-nrf52_bsim}"
+
 BOARD_ROOT="${BOARD_ROOT:-${ZEPHYR_BASE}}"
 
 mkdir -p ${WORK_DIR}
diff --git a/tests/bsim/bluetooth/ll/conn/tests_scripts/basic_conn_encrypted_split.sh b/tests/bsim/bluetooth/ll/conn/tests_scripts/basic_conn_encrypted_split.sh
index c2bf39cac13..150b2fd2960 100755
--- a/tests/bsim/bluetooth/ll/conn/tests_scripts/basic_conn_encrypted_split.sh
+++ b/tests/bsim/bluetooth/ll/conn/tests_scripts/basic_conn_encrypted_split.sh
@@ -2,25 +2,13 @@
 # Copyright 2018 Oticon A/S
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 # Basic connection test: a central connects to a peripheral and expects a
 # notification
 simulation_id="basic_conn_encr_split"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 5 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=5
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -35,7 +23,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_ll_conn_prj_split_conf \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=20e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/ll/conn/tests_scripts/basic_conn_encrypted_split_privacy.sh b/tests/bsim/bluetooth/ll/conn/tests_scripts/basic_conn_encrypted_split_privacy.sh
index 7062aaeab47..53293f0bb12 100755
--- a/tests/bsim/bluetooth/ll/conn/tests_scripts/basic_conn_encrypted_split_privacy.sh
+++ b/tests/bsim/bluetooth/ll/conn/tests_scripts/basic_conn_encrypted_split_privacy.sh
@@ -2,25 +2,13 @@
 # Copyright 2018 Oticon A/S
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 # Basic connection test: a central connects to a peripheral and expects a
 # notification
 simulation_id="basic_conn_encr_split_privacy"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 5 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=5
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -37,7 +25,4 @@ Execute \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=20e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/ll/conn/tests_scripts/basic_conn_split.sh b/tests/bsim/bluetooth/ll/conn/tests_scripts/basic_conn_split.sh
index 1106e44ca5c..621ab1d3720 100755
--- a/tests/bsim/bluetooth/ll/conn/tests_scripts/basic_conn_split.sh
+++ b/tests/bsim/bluetooth/ll/conn/tests_scripts/basic_conn_split.sh
@@ -2,25 +2,13 @@
 # Copyright 2018 Oticon A/S
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 # Basic connection test: a central connects to a peripheral and expects a
 # notification, using the split controller (ULL LLL)
 simulation_id="basic_conn_split"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 5 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=5
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -35,7 +23,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_ll_conn_prj_split_conf\
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=20e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/ll/conn/tests_scripts/basic_conn_split_low_lat.sh b/tests/bsim/bluetooth/ll/conn/tests_scripts/basic_conn_split_low_lat.sh
index a3fa4abd146..4e7f993c456 100755
--- a/tests/bsim/bluetooth/ll/conn/tests_scripts/basic_conn_split_low_lat.sh
+++ b/tests/bsim/bluetooth/ll/conn/tests_scripts/basic_conn_split_low_lat.sh
@@ -2,25 +2,13 @@
 # Copyright 2018 Oticon A/S
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 # Basic connection test: a central connects to a peripheral and expects a
 # notification, using the split controller (ULL LLL) in Low Latency Variant
 simulation_id="basic_conn_split_low_lat"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 5 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=5
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -37,7 +25,4 @@ Execute \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=20e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/ll/edtt/tests_scripts/_controller_tests_inner.sh b/tests/bsim/bluetooth/ll/edtt/tests_scripts/_controller_tests_inner.sh
index a7b0592b22a..e75f6ffbe35 100755
--- a/tests/bsim/bluetooth/ll/edtt/tests_scripts/_controller_tests_inner.sh
+++ b/tests/bsim/bluetooth/ll/edtt/tests_scripts/_controller_tests_inner.sh
@@ -44,9 +44,10 @@ VERBOSITY_LEVEL_DEVS=${VERBOSITY_LEVEL_DEVS:-${VERBOSITY_LEVEL}}
 VERBOSITY_LEVEL_DEV1=${VERBOSITY_LEVEL_1:-${VERBOSITY_LEVEL_DEVS}}
 VERBOSITY_LEVEL_DEV2=${VERBOSITY_LEVEL_2:-${VERBOSITY_LEVEL_DEVS}}
 
-PROCESS_IDS=""; EXIT_CODE=0
 
-function Execute(){
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
+function _Execute(){
   local rr=
   if [ "rr" = "$1" ]; then
     local devno=$2
@@ -56,19 +57,12 @@ function Execute(){
     rm -rf ${out}
     rr="rr record -o ${out}"
   fi
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 300 ${rr} $@ & PROCESS_IDS="$PROCESS_IDS $!"
+  check_program_exists $1
+  run_in_background timeout 300 ${rr} $@
 }
 
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-: "${EDTT_PATH:?EDTT_PATH must be defined}"
 
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+: "${EDTT_PATH:?EDTT_PATH must be defined}"
 
 #Give a default value to PRJ_CONF_x if it does not have one yet:
 PRJ_CONF="${PRJ_CONF:-prj_dut_conf}"
@@ -94,24 +88,21 @@ fi
 
 cd ${EDTT_PATH}
 
-Execute ./src/edttool.py -s=${SIMULATION_ID} -d=2 --transport bsim \
+_Execute ./src/edttool.py -s=${SIMULATION_ID} -d=2 --transport bsim \
   -T $TEST_MODULE -C $TEST_FILE -v=${VERBOSITY_LEVEL_EDTT} -S -l --low-level-device-nbr=3 \
   -D=2 -devs 0 1 -RxWait=2.5e3
 
 cd ${BSIM_OUT_PATH}/bin
 
-Execute \
+_Execute \
   ${RR_ARGS_1} ./bs_${BOARD}_tests_bsim_bluetooth_ll_edtt_hci_test_app_${PRJ_CONF_1}\
   -s=${SIMULATION_ID} -d=0 -v=${VERBOSITY_LEVEL_DEV1} -RealEncryption=1
 
-Execute \
+_Execute \
   ${RR_ARGS_2} ./bs_${BOARD}_tests_bsim_bluetooth_ll_edtt_hci_test_app_${PRJ_CONF_2}\
   -s=${SIMULATION_ID} -d=1 -v=${VERBOSITY_LEVEL_DEV2} -RealEncryption=1
 
-Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL_PHY} -s=${SIMULATION_ID} \
+_Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL_PHY} -s=${SIMULATION_ID} \
   -D=4 -sim_length=3600e6 -dump_imm $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
-exit $EXIT_CODE #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/ll/edtt/tests_scripts/gatt.llcp.sh b/tests/bsim/bluetooth/ll/edtt/tests_scripts/gatt.llcp.sh
index f30f866923e..d16b743435d 100755
--- a/tests/bsim/bluetooth/ll/edtt/tests_scripts/gatt.llcp.sh
+++ b/tests/bsim/bluetooth/ll/edtt/tests_scripts/gatt.llcp.sh
@@ -2,27 +2,17 @@
 # Copyright 2019 Oticon A/S
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 # GATT regression tests based on the EDTTool
 SIMULATION_ID="edtt_gatt_llcp"
 VERBOSITY_LEVEL=2
-PROCESS_IDS=""; EXIT_CODE=0
+EXECUTE_TIMEOUT=300
+
 CWD="$(cd "$(dirname "${BASH_SOURCE[0]}")" ; pwd -P)"
 
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 300 $@ & PROCESS_IDS="$PROCESS_IDS $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
 : "${EDTT_PATH:?EDTT_PATH must be defined}"
 
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
-
 cd ${EDTT_PATH}
 
 Execute ./src/edttool.py -s=${SIMULATION_ID} -d=0 --transport bsim \
@@ -42,7 +32,4 @@ Execute \
 Execute ./bs_2G4_phy_v1 -v=${VERBOSITY_LEVEL} -s=${SIMULATION_ID} \
   -D=3 -sim_length=3600e6 $@
 
-for PROCESS_ID in $PROCESS_IDS; do
-  wait $PROCESS_ID || let "EXIT_CODE=$?"
-done
-exit $EXIT_CODE #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/ll/iso/tests_scripts/broadcast_iso.sh b/tests/bsim/bluetooth/ll/iso/tests_scripts/broadcast_iso.sh
index bbec1b2c712..2f9be4c3d8f 100755
--- a/tests/bsim/bluetooth/ll/iso/tests_scripts/broadcast_iso.sh
+++ b/tests/bsim/bluetooth/ll/iso/tests_scripts/broadcast_iso.sh
@@ -2,25 +2,13 @@
 # Copyright 2020 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 # Basic ISO broadcast test: a broadcaster transmits a BIS and a receiver listens
 # to the BIS.
 simulation_id="broadcast_iso"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 30 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=30
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -33,7 +21,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_ll_iso_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=30e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/ll/iso/tests_scripts/broadcast_iso_vs_dp.sh b/tests/bsim/bluetooth/ll/iso/tests_scripts/broadcast_iso_vs_dp.sh
index 62b73731467..1e1fde1247d 100755
--- a/tests/bsim/bluetooth/ll/iso/tests_scripts/broadcast_iso_vs_dp.sh
+++ b/tests/bsim/bluetooth/ll/iso/tests_scripts/broadcast_iso_vs_dp.sh
@@ -2,25 +2,13 @@
 # Copyright 2020 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
 
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
+
 # Basic ISO broadcast test: a broadcaster transmits a BIS and a receiver listens
 # to the BIS, and recevied SDUs are emitted via vendor data path implementation.
 simulation_id="broadcast_iso_vs_dp"
 verbosity_level=2
-process_ids=""; exit_code=0
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 30 $@ & process_ids="$process_ids $!"
-}
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
+EXECUTE_TIMEOUT=30
 
 cd ${BSIM_OUT_PATH}/bin
 
@@ -33,7 +21,4 @@ Execute ./bs_${BOARD}_tests_bsim_bluetooth_ll_iso_prj_conf \
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=30e6 $@
 
-for process_id in $process_ids; do
-  wait $process_id || let "exit_code=$?"
-done
-exit $exit_code #the last exit code != 0
+wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/mesh/_mesh_test.sh b/tests/bsim/bluetooth/mesh/_mesh_test.sh
index 0827585f3c9..2b2d0b4c52d 100755
--- a/tests/bsim/bluetooth/mesh/_mesh_test.sh
+++ b/tests/bsim/bluetooth/mesh/_mesh_test.sh
@@ -1,27 +1,9 @@
 # Copyright 2021 Nordic Semiconductor
 # SPDX-License-Identifier: Apache-2.0
 
-process_ids=(); exit_code=0
+source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 
-trap ctrl_c INT
-
-function ctrl_c() {
-  echo "Aborted by CTRL-C"
-  conf=${conf:-prj_conf}
-
-  for process_id in ${process_ids[@]}; do
-    kill -15 $process_id
-  done
-}
-
-function Execute(){
-  if [ ! -f $1 ]; then
-    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
- compile it?)\e[39m"
-    exit 1
-  fi
-  timeout 300 $@ & process_ids+=( $! )
-}
+EXECUTE_TIMEOUT=300
 
 function Skip(){
   for i in "${SKIP[@]}" ; do
@@ -86,16 +68,5 @@ function RunTest(){
 
   Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=$s_id -D=$count -argschannel -at=35
 
-  for process_id in ${process_ids[@]}; do
-    wait $process_id || let "exit_code=$?"
-  done
-
-  if [ "$exit_code" != "0" ] ; then
-    exit $exit_code #the last exit code != 0
-  fi
+  wait_for_background_jobs
 }
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
-
-#Give a default value to BOARD if it does not have one yet:
-BOARD="${BOARD:-nrf52_bsim}"
diff --git a/tests/bsim/bluetooth/mesh/compile.sh b/tests/bsim/bluetooth/mesh/compile.sh
index d0c3f91f4bb..c00048b4195 100755
--- a/tests/bsim/bluetooth/mesh/compile.sh
+++ b/tests/bsim/bluetooth/mesh/compile.sh
@@ -6,14 +6,11 @@
 
 #set -x #uncomment this line for debugging
 set -ue
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
 : "${BSIM_COMPONENTS_PATH:?BSIM_COMPONENTS_PATH must be defined}"
 : "${ZEPHYR_BASE:?ZEPHYR_BASE must be set to point to the zephyr root\
  directory}"
 
 WORK_DIR="${WORK_DIR:-${ZEPHYR_BASE}/bsim_out}"
-BOARD="${BOARD:-nrf52_bsim}"
 BOARD_ROOT="${BOARD_ROOT:-${ZEPHYR_BASE}}"
 
 mkdir -p ${WORK_DIR}
diff --git a/tests/bsim/compile.sh b/tests/bsim/compile.sh
index 39e07d1313d..beec89f937c 100755
--- a/tests/bsim/compile.sh
+++ b/tests/bsim/compile.sh
@@ -6,14 +6,12 @@
 
 #set -x #uncomment this line for debugging
 set -ue
-
-: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
 : "${BSIM_COMPONENTS_PATH:?BSIM_COMPONENTS_PATH must be defined}"
 : "${ZEPHYR_BASE:?ZEPHYR_BASE must be set to point to the zephyr root\
  directory}"
 
 WORK_DIR="${WORK_DIR:-${ZEPHYR_BASE}/bsim_out}"
-BOARD="${BOARD:-nrf52_bsim}"
+
 BOARD_ROOT="${BOARD_ROOT:-${ZEPHYR_BASE}}"
 
 mkdir -p ${WORK_DIR}
diff --git a/tests/bsim/sh_common.source b/tests/bsim/sh_common.source
index 25c59d3f3c5..000ea36cd0c 100644
--- a/tests/bsim/sh_common.source
+++ b/tests/bsim/sh_common.source
@@ -3,6 +3,12 @@
 
 _process_ids="";
 
+#All user scripts require these variable, let's check for them here already
+: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
+
+#Give a default value to BOARD if it does not have one yet:
+BOARD="${BOARD:-nrf52_bsim}"
+
 function run_in_background(){
   $@ & _process_ids="$_process_ids $!"
 }
@@ -12,5 +18,31 @@ function wait_for_background_jobs(){
   for process_id in $_process_ids; do
     wait $process_id || let "exit_code=$?"
   done
-  exit $exit_code #the last exit code != 0
+  [ $exit_code -eq 0 ] || exit $exit_code
 }
+
+trap ctrl_c INT
+
+function ctrl_c() {
+  echo "Aborted by CTRL-C"
+
+  for process_id in $_process_ids; do
+    kill -15 $process_id
+  done
+}
+
+function check_program_exists() {
+  if [ ! -f $1 ]; then
+    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
+ compile it?)\e[39m"
+    exit 1
+  fi
+}
+
+function Execute() {
+  EXECUTE_TIMEOUT="${EXECUTE_TIMEOUT:-30}"
+
+  check_program_exists $1
+  run_in_background timeout ${EXECUTE_TIMEOUT} $@
+}
+