#!/bin/bash#chkconfig: 2345 30 50#Date:2017-6-29#Author:xcn(baishuchao@yeah.net)#version 1.0PID="/var/run/rsync.pid"start_rsync(){if [ -f $PID ]  then 	echo "rsync is running"else	 rsync --daemon	echo "rsync is started"fi}stop_rsync(){if [ -f $PID ]   #存在而不为空then	kill -USR2 `cat $PID`	rm -rf $PID	echo "rsync is stoped"else	echo "rsync no running"fi}case $1 in	start)	start_rsync	;;	stop)	stop_rsync	;;	restart)	stop_rsync	start_rsync	;;	*)	echo "USAGE:$0 {start|stop|restart}"	exit1esac