Linux中nginx服务器启动脚本

#!/bin/bash
#author wangning
#date 2017-7-14
#qq 1198143315
#Email 1198143315@qq.com

[ -f /etc/init.d/functions ] && . /etc/init.d/functions

#chkconfig: 2345 46 78
#description: nginx service manage

#################define variable################################################
num=`ps -ef|grep worker|grep -v grep|wc -l`
nginx=/application/nginx/sbin/nginx
########################start stop restart reload functions##########################
nginx_start(){
if [ $num -gt 5 ];then
echo "the nginx service has running"
exit 1
else
$nginx    &>/dev/null
action "start nginx" /bin/true
fi
}

nginx_stop(){
if [ $num -lt 5 ];then
echo "the nginx service has stoped"
exit 2
else
$nginx -s stop
action "stop nginx" /bin/true
fi
}

nginx_restart(){
$nginx -s stop
$nginx
action "restart nginx" /bin/true
}

nginx_reload(){
$nginx -s reload
action "reload nginx" /bin/true
}
#########################nginx manage###########################################

case $1 in
start)
nginx_start
;;
stop)
nginx_stop
;;
restart)
nginx_restart
;;
reload)
nginx_reload
;;
*)
echo "USAGE:$0 {start|stop|restart|reload}"
esac