+# Create default or update existing /etc/sysconfig/vswitch.
+SYSCONFIG=/etc/sysconfig/vswitch
+TEMPLATE=/root/vswitch/scripts/sysconfig.template
+if [ ! -e $SYSCONFIG ]; then
+ cp $TEMPLATE $SYSCONFIG
+else
+ for var in $(awk -F'[ :]' '/^# [_A-Z0-9]+:/{print $2}' $TEMPLATE)
+ do
+ if ! grep $var $SYSCONFIG >/dev/null 2>&1; then
+ echo >> $SYSCONFIG
+ sed -n "/$var:/,/$var=/p" $TEMPLATE >> $SYSCONFIG
+ fi
+ done
+fi
+