diff --git a/tests/script/sh/clear.sh b/tests/script/sh/clear.sh
index 8c92054352f8f2aed0b8c3373794c9deffe725f4..73d022d4f3c01c89b00da6da003ad0377695f9c9 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 430d0920d2c0b04edca9b4774089cbbff337cb9f..4da00dff43af93dd24cb39ed0ac3b07746d49d20 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 ed2011737943f089d2997c9ef7cf37741bb2be56..51ad03fe99d3b82cb8de6683e668e45e952a7fb8 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 : "