思路:nginx启动后会有nginx.pid文件在指定位置下,通过判断该文件是否存在。决定nginx是否已经启动。
#!/bin/bash
#this is my first try to test write a shell to control nginx daemon
#History 2015-08-04 masterliu
PATH=/usr/bin/:/usr/local/bin:/bin:/usr/sbin:/usr/local/sbin:/sbin:~/bin
export PATH
#this file could be configured in nginx.conf
PIDfile=/usr/local/nginx/logs/nginx.pid
Nginxd=/usr/local/nginx/sbin/nginx
function start(){
if [ -e $PIDfile ];then
echo -e "nginx has already started\t\t[OK]" && exit 0
fi
$Nginxd &> /dev/null
if [ $? = 0 ];then
echo -e "nginx has started\t\t[OK]"
else
echo -e " nginx start failed\t\t[FAILED]"
fi
}
function stop(){
if [ ! -e $PIDfile ];then
echo -e "nginx has already stopped\t\t[OK]" && exit 0
fi
#killall nginx
$Nginxd -s stop &> /dev/null
sleep 2
if [ ! -e $PIDfile ];then
echo -e "nginx has stopped\t\t[OK]";
fi
}
function reload(){
if [ ! -e $PIDfile ];then
echo -e "nginx hasn‘t start\t\t[OK]" && exit 0
fi
$Nginxd -s reload && echo -e "nginx has reload\t\t[OK]" && exit 0
}
function status(){
if [ ! -e $PIDfile ];then
echo -e " nginx hasn‘t run\t\t[OK]"
else
echo -e " nginx is running\t\t[OK]"
fi
}
case "$1" in
start)
start
;;
stop)
stop
;;
restart)
stop;
start;
;;
status)
status
;;
reload)
reload
;;
*)
echo -e "\t start|stop|restart|status|reload\t"
;;
esac