diff --git a/packages/core/examples/simple-asset-transfer/fabric/scripts/fabric-install.sh b/packages/core/examples/simple-asset-transfer/fabric/scripts/fabric-install.sh
index 65093a8f0c..af19285a6b 100755
--- a/packages/core/examples/simple-asset-transfer/fabric/scripts/fabric-install.sh
+++ b/packages/core/examples/simple-asset-transfer/fabric/scripts/fabric-install.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Pre-requesits install
 
diff --git a/packages/core/examples/simple-asset-transfer/fabric/scripts/runApp.sh b/packages/core/examples/simple-asset-transfer/fabric/scripts/runApp.sh
index d77c63b15b..3f169d49c6 100755
--- a/packages/core/examples/simple-asset-transfer/fabric/scripts/runApp.sh
+++ b/packages/core/examples/simple-asset-transfer/fabric/scripts/runApp.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright IBM Corp. All Rights Reserved.
 #
diff --git a/packages/core/examples/simple-asset-transfer/fabric/scripts/start.sh b/packages/core/examples/simple-asset-transfer/fabric/scripts/start.sh
index e90fb8588e..488963d154 100755
--- a/packages/core/examples/simple-asset-transfer/fabric/scripts/start.sh
+++ b/packages/core/examples/simple-asset-transfer/fabric/scripts/start.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Start the API wrapping methods to interact with fabric
 if [ ! -d "../logs" ]; then
@@ -7,7 +7,7 @@ if [ ! -d "../logs" ]; then
 fi
 
 # Kill old SDK server
-fuser -k -n tcp 4000
+pid=$(lsof -i tcp:4000 -t);  [ -z "$pid" ] || kill -TERM $pid || kill -KILL $pid
 
 path_to_log_file="../logs/start.log"
 
diff --git a/packages/core/examples/simple-asset-transfer/package.json b/packages/core/examples/simple-asset-transfer/package.json
index f703d0bbbd..adc515aae1 100644
--- a/packages/core/examples/simple-asset-transfer/package.json
+++ b/packages/core/examples/simple-asset-transfer/package.json
@@ -18,7 +18,7 @@
 		"corda": "cd corda/build/scripts && ./start_corda_components.sh ../../logs && cd ../../../",
 		"corda:down": "cd corda/build/scripts && ./stop_corda_components.sh ../../logs && cd ../../../",
 		"fabric": "cd fabric/scripts && ./start.sh",
-		"fabric:down": "fuser -k -n tcp 4000 ; docker-compose -f fabric/artifacts/docker-compose.yaml rm -sf",
+		"fabric:down": "pid=$(lsof -i tcp:4000 -t); [ -z \"$pid\" ] || kill -TERM $pid || kill -KILL $pid; docker-compose -f fabric/artifacts/docker-compose.yaml rm -sf",
 		"fabric:log": "docker-compose -f fabric/artifacts/docker-compose.yaml logs -f",
 		"fed:build": "docker build --no-cache --force-rm -t federation/validator .",
 		"fed:fabric": "docker-compose -p federation-fabric -f ./federations/docker-compose-fabric.yml --compatibility up --renew-anon-volumes -d",
diff --git a/packages/core/tools/ci.sh b/packages/core/tools/ci.sh
index abe33cce8b..0e261b40ad 100755
--- a/packages/core/tools/ci.sh
+++ b/packages/core/tools/ci.sh
@@ -1,10 +1,11 @@
-#!/bin/bash
+#!/usr/bin/env bash
 ###
 ### Continous Integration Shell Script
 ###
 ### Designed to be re-entrant on a local dev machine as well, not just on a
 ### newly pulled up VM.
 ###
+echo $BASH_VERSION
 
 STARTED_AT=`date +%s`
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
@@ -129,7 +130,7 @@ function mainTask()
 
   ENDED_AT=`date +%s`
   runtime=$((ENDED_AT-STARTED_AT))
-  echo "$(date -Iseconds) [CI] SUCCESS - runtime=$runtime seconds."
+  echo "$(date +%FT%T%z) [CI] SUCCESS - runtime=$runtime seconds."
   exit 0
 }
 
@@ -141,7 +142,7 @@ function onTaskFailure()
 
   ENDED_AT=`date +%s`
   runtime=$((ENDED_AT-STARTED_AT))
-  echo "$(date -Iseconds) [CI] FAILURE - runtime=$runtime seconds."
+  echo "$(date +%FT%T%z) [CI] FAILURE - runtime=$runtime seconds."
   exit 1
 }
 
diff --git a/packages/core/tools/configure.sh b/packages/core/tools/configure.sh
index 801b24f4ee..6951a19e59 100755
--- a/packages/core/tools/configure.sh
+++ b/packages/core/tools/configure.sh
@@ -1,4 +1,4 @@
-#!/bin/bash -x
+#!/usr/bin/env bash -x
 
 # Remove existing software that we want specific version.
 sudo apt purge nodejs openjdk-\*
diff --git a/packages/core/tools/dump-all-logs.sh b/packages/core/tools/dump-all-logs.sh
index 042e56bf5a..09148e8e66 100755
--- a/packages/core/tools/dump-all-logs.sh
+++ b/packages/core/tools/dump-all-logs.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 ###
 ### Continous Integration Shell Script --- Dump All Logs
 ###
diff --git a/tools/cleanup.sh b/tools/cleanup.sh
index 97b9de38b8..5b31d8924c 100755
--- a/tools/cleanup.sh
+++ b/tools/cleanup.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 cd $(dirname $0)/../examples/simple-asset-transfer/