例如

#!/bin/sh
FIND_FILE="/etc/config/samba"   
FIND_STR="udisk01"
if [ `grep -c "$FIND_STR" $FIND_FILE` -ne '0' ];then
        cp /etc/config/samba.ok /etc/config/samba 
        /etc/init.d/samba restart             
        exit 0                       
fi