diff --git a/xCAT-server/share/xcat/install/scripts/post.rh b/xCAT-server/share/xcat/install/scripts/post.rh
index 99ab1c1b4..45df143cd 100644
--- a/xCAT-server/share/xcat/install/scripts/post.rh
+++ b/xCAT-server/share/xcat/install/scripts/post.rh
@@ -3,9 +3,9 @@
 #
 echo "post scripts" >/root/post.log
 export PRINIC=#TABLEBLANKOKAY:noderes:THISNODE:primarynic#
-if [ "$PRINIC" == "mac"]
+if [ "$PRINIC" == "mac" ]
 then
-    export PRINIC="#TABLE:mac:THISNODE:mac#"
+    export PRINIC='#TABLE:mac:THISNODE:mac#'
 fi
 if [ -z "$PRINIC" ]
 then
diff --git a/xCAT-server/share/xcat/install/scripts/post.rh.iscsi b/xCAT-server/share/xcat/install/scripts/post.rh.iscsi
index 30b628912..21a8fe253 100644
--- a/xCAT-server/share/xcat/install/scripts/post.rh.iscsi
+++ b/xCAT-server/share/xcat/install/scripts/post.rh.iscsi
@@ -3,9 +3,9 @@
 #
 echo "post scripts" >/root/post.log
 export PRINIC=#TABLEBLANKOKAY:noderes:THISNODE:primarynic#
-if [ "$PRINIC" == "mac"]
+if [ "$PRINIC" == "mac" ]
 then
-    export PRINIC="#TABLE:mac:THISNODE:mac#"
+    export PRINIC='#TABLE:mac:THISNODE:mac#'
 fi
 if [ -z "$PRINIC" ]
 then
diff --git a/xCAT-server/share/xcat/install/scripts/post.sles b/xCAT-server/share/xcat/install/scripts/post.sles
index 8ccf6c081..fd376e163 100644
--- a/xCAT-server/share/xcat/install/scripts/post.sles
+++ b/xCAT-server/share/xcat/install/scripts/post.sles
@@ -17,9 +17,9 @@ STARTMODE=onboot
 EOF
 
 export PRINIC=#TABLEBLANKOKAY:noderes:THISNODE:primarynic#
-if [ "$PRINIC" == "mac"]
+if [ "$PRINIC" == "mac" ]
 then
-    export PRINIC="#TABLE:mac:THISNODE:mac#"
+    export PRINIC='#TABLE:mac:THISNODE:mac#'
 fi
 if [ -z "$PRINIC" ]
 then
diff --git a/xCAT-server/share/xcat/install/scripts/post.sles11 b/xCAT-server/share/xcat/install/scripts/post.sles11
index 558afcf19..c665d0ed9 100644
--- a/xCAT-server/share/xcat/install/scripts/post.sles11
+++ b/xCAT-server/share/xcat/install/scripts/post.sles11
@@ -17,9 +17,9 @@ STARTMODE=onboot
 EOF
 
 export PRINIC=#TABLEBLANKOKAY:noderes:THISNODE:primarynic#
-if [ "$PRINIC" == "mac"]
+if [ "$PRINIC" == "mac" ]
 then
-    export PRINIC="#TABLE:mac:THISNODE:mac#"
+    export PRINIC='#TABLE:mac:THISNODE:mac#'
 fi
 if [ -z "$PRINIC" ]
 then