02.case案例Nginx启动脚本
/usr/sbin/nginx 启动
/usr/sbin/nginx -s stop 停止
/usr/sbin/nginx -s reload 重新加载
/usr/sbin/nginx -s restart 不支持
/usr/sbin/nginx -s stop && sleep 1 && /usr/sbin/nginx 重启

-----------------Nginx启动脚本
[root@web01 ~]# cat nginx_start.sh 
#!/bin/bash
[ -f /etc/init.d/functions ] && . /etc/init.d/functions
Nginx='/usr/sbin/nginx'
te(){
    if [ $? -eq 0 ];then
       action "Nginx $1 is"  /bin/true
    else
       action "Nginx $1 is"  /bin/false
    fi
}

case $1 in
	start)
	     $Nginx
	     te $1
	;;
	stop)
	    $Nginx -s stop
	     te $1
	;;
	reload)
	    $Nginx -s reload
	    te $1
	;;
	restart)
	    $Nginx  -s stop && sleep 1 && $Nginx
	    te $1
	;;
	status)
	   Nginx_port=`netstat -tnulp|grep nginx|awk '{print $4}'`
	   echo "Nginx_Port=$Nginx_port"
	;;
	*)
	echo "Usage $0 [start|stop|restart|reload|status]"
esac