diff --git a/xCAT/postscripts/hardeths b/xCAT/postscripts/hardeths
index cde4cc211..0d51de150 100755
--- a/xCAT/postscripts/hardeths
+++ b/xCAT/postscripts/hardeths
@@ -46,7 +46,7 @@ network_ipv4calc ()
     echo $NETWORK
 }
 
-if (cat /etc/os-release |grep -i  '^NAME=[ "]*Cumulus Linux[ "]*$' >/dev/null 2>&1); then
+if [ -f /etc/os-release ] && (cat /etc/os-release |grep -i  '^NAME=[ "]*Cumulus Linux[ "]*$' >/dev/null 2>&1); then
     osver="cumulus"
 fi
 
diff --git a/xCAT/postscripts/otherpkgs b/xCAT/postscripts/otherpkgs
index d39334f64..aa2a21684 100755
--- a/xCAT/postscripts/otherpkgs
+++ b/xCAT/postscripts/otherpkgs
@@ -25,7 +25,7 @@
 #enable debug
 #set -x
 
-if cat /etc/os-release |grep -i -e "^NAME=[ \"']*Cumulus Linux[ \"']*$" >/dev/null 2>&1 ; then
+if [ -f /etc/os-release ] && cat /etc/os-release |grep -i -e "^NAME=[ \"']*Cumulus Linux[ \"']*$" >/dev/null 2>&1 ; then
    #TODO
    echo "Cumulus OS is not supported yet, nothing to do..."
    logger -t xcat -p local4.info "Cumulus OS is not supported yet, nothing to do..."   
diff --git a/xCAT/postscripts/remoteshell b/xCAT/postscripts/remoteshell
index c2023426a..690ff2e97 100755
--- a/xCAT/postscripts/remoteshell
+++ b/xCAT/postscripts/remoteshell
@@ -12,7 +12,7 @@
 #
 # if on the Management Node, exit
 
-if cat /etc/os-release |grep -i -e "^NAME=[ \"']*Cumulus Linux[ \"']*$" >/dev/null 2>&1 ; then
+if [ -f /etc/os-release ] && cat /etc/os-release |grep -i -e "^NAME=[ \"']*Cumulus Linux[ \"']*$" >/dev/null 2>&1 ; then
    #TODO
    echo "Cumulus OS is not supported yet, nothing to do..."
    logger -t xcat -p local4.info "Cumulus OS is not supported yet, nothing to do..."
diff --git a/xCAT/postscripts/syncfiles b/xCAT/postscripts/syncfiles
old mode 100644
new mode 100755
index 5ce495dc2..1074fe389
--- a/xCAT/postscripts/syncfiles
+++ b/xCAT/postscripts/syncfiles
@@ -14,7 +14,7 @@ if [ -d /.statelite ]; then
    exit 0
 fi
 
-if cat /etc/os-release |grep -i -e "^NAME=[ \"']*Cumulus Linux[ \"']*$" >/dev/null 2>&1 ; then
+if [ -f /etc/os-release ] && cat /etc/os-release |grep -i -e "^NAME=[ \"']*Cumulus Linux[ \"']*$" >/dev/null 2>&1 ; then
    #TODO
    echo "Cumulus OS is not supported yet, nothing to do..."
    logger -t xcat -p local4.info "Cumulus OS is not supported yet, nothing to do..."
diff --git a/xCAT/postscripts/syslog b/xCAT/postscripts/syslog
index d55364e00..8705aa168 100755
--- a/xCAT/postscripts/syslog
+++ b/xCAT/postscripts/syslog
@@ -149,7 +149,9 @@ config_rsyslog_V8()
   remoteconf="/etc/rsyslog.d/remote.conf"
 
   #for Cumulus OS inside ONIE switches
-  cat /etc/os-release |grep -i -e "^NAME=[ \"']*Cumulus Linux[ \"']*$" >/dev/null 2>&1 && remoteconf="/etc/rsyslog.d/99-syslog.conf"
+  if [ -f /etc/os-release ]; then
+     cat /etc/os-release |grep -i -e "^NAME=[ \"']*Cumulus Linux[ \"']*$" >/dev/null 2>&1 && remoteconf="/etc/rsyslog.d/99-syslog.conf"
+  fi
 
   # If this is a Management Node or Service Node, then it will be receiving syslog entries from the
   # compute nodes. Management Node is receiving from Service Nodes and possibly compute nodes.