diff --git a/xCAT-client-2.0/usr/sbin/tabedit b/xCAT-client-2.0/usr/sbin/tabedit
index cc5d5a70c..1ea210b96 100755
--- a/xCAT-client-2.0/usr/sbin/tabedit
+++ b/xCAT-client-2.0/usr/sbin/tabedit
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 # IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
 function cexit {
   if [ -d /tmp/tabedit.$$ ]; then
diff --git a/xCAT-server-2.0/etc/init.d/xcatd b/xCAT-server-2.0/etc/init.d/xcatd
index 020ae4559..947526777 100755
--- a/xCAT-server-2.0/etc/init.d/xcatd
+++ b/xCAT-server-2.0/etc/init.d/xcatd
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 # IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
 # chkconfig: 345 85 60
 # description: xCAT management service
diff --git a/xCAT-server-2.0/usr/sbin/mknb b/xCAT-server-2.0/usr/sbin/mknb
index 6b3a84c1a..609bdd74d 100755
--- a/xCAT-server-2.0/usr/sbin/mknb
+++ b/xCAT-server-2.0/usr/sbin/mknb
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 # IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
 if [ $# -ne 1 ];  then
   echo "Usage: mknb <arch>"
diff --git a/xCAT-server-2.0/usr/share/xcat/postscripts/reboot b/xCAT-server-2.0/usr/share/xcat/postscripts/reboot
index 9c34fe8b6..a2966c12d 100755
--- a/xCAT-server-2.0/usr/share/xcat/postscripts/reboot
+++ b/xCAT-server-2.0/usr/share/xcat/postscripts/reboot
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 # IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
 #egan@us.ibm.com
 #(C)IBM Corp
diff --git a/xCAT-server-2.0/xcatd.rc b/xCAT-server-2.0/xcatd.rc
index 3a761c043..c43ff47b4 100755
--- a/xCAT-server-2.0/xcatd.rc
+++ b/xCAT-server-2.0/xcatd.rc
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 # IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
 # chkconfig: 345 85 60
 # description: xCAT management service
diff --git a/xCAT/postscripts/reboot b/xCAT/postscripts/reboot
index 9c34fe8b6..a2966c12d 100755
--- a/xCAT/postscripts/reboot
+++ b/xCAT/postscripts/reboot
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 # IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
 #egan@us.ibm.com
 #(C)IBM Corp