build: Explicitly use bash for shell scripts

VPP requires bash for all shell scripts. Align shebang lines in build
and test scripts to look up the location of bash rather than hard coding
'/bin/bash'.

Look up the location of bash for makefiles.

Type: improvement
Change-Id: I23b705d81d60389fa8af61c680cf0abd74f0ea24
Signed-off-by: Tom Jones <thj@freebsd.org>

6 files changed, 6 insertions, 6 deletions

diff --git a/test/scripts/compress_failed.sh b/test/scripts/compress_failed.sh
index ff17d244629..7e2cd9c5512 100755
--- a/test/scripts/compress_failed.sh
+++ b/test/scripts/compress_failed.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 if [ "$(ls -A ${FAILED_DIR})" ]
 then
diff --git a/test/scripts/run.sh b/test/scripts/run.sh
index 51c1c62df9d..504edd677cc 100755
--- a/test/scripts/run.sh
+++ b/test/scripts/run.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 ff="0"
 items=
diff --git a/test/scripts/run_in_venv_with_cleanup.sh b/test/scripts/run_in_venv_with_cleanup.sh
index af32f87ea5d..3f9d44ff4b5 100755
--- a/test/scripts/run_in_venv_with_cleanup.sh
+++ b/test/scripts/run_in_venv_with_cleanup.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 rv=0
 
diff --git a/test/scripts/setsid_wrapper.sh b/test/scripts/setsid_wrapper.sh
index 030c3b079de..550c7b94778 100755
--- a/test/scripts/setsid_wrapper.sh
+++ b/test/scripts/setsid_wrapper.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 cmd=$1
 force_foreground=$2
diff --git a/test/scripts/socket_test.sh b/test/scripts/socket_test.sh
index b94a2f344b7..3ba739a8083 100755
--- a/test/scripts/socket_test.sh
+++ b/test/scripts/socket_test.sh
@@ -1,4 +1,4 @@
-#! /bin/bash
+#!/usr/bin/env bash
 #
 # socket_test.sh -- script to run socket tests.
 #
diff --git a/test/scripts/test-loop.sh b/test/scripts/test-loop.sh
index 51f5d5cef58..b825f2b4cc8 100755
--- a/test/scripts/test-loop.sh
+++ b/test/scripts/test-loop.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 function usage() {
  echo "$0" 1>&2