diff --git a/tests/script/sh/clear.sh b/tests/script/sh/clear.sh
index 8c92054352..73d022d4f3 100755
--- a/tests/script/sh/clear.sh
+++ b/tests/script/sh/clear.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 echo "Executing clear.sh"
 
diff --git a/tests/script/sh/exec_tarbitrator.sh b/tests/script/sh/exec_tarbitrator.sh
index 430d0920d2..4da00dff43 100755
--- a/tests/script/sh/exec_tarbitrator.sh
+++ b/tests/script/sh/exec_tarbitrator.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 # if [ $# != 2 || $# != 3 ]; then 
   # echo "argument list need input : "
diff --git a/tests/script/sh/exec_up.sh b/tests/script/sh/exec_up.sh
index ed20117379..51ad03fe99 100755
--- a/tests/script/sh/exec_up.sh
+++ b/tests/script/sh/exec_up.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 # if [ $# != 4 || $# != 5 ]; then 
   # echo "argument list need input : "