linux 开机自启动 nginx

if [ -z $1 ]
then
    echo "Usage: $0 {start|stop|reload|restart|status}"
    exit 1
fi
#service name for nginx
SNAME=nginx
#nginx home dir
NGINX_HOME=/usr/local/nginx
PID=$NGINX_HOME/logs/nginx.pid
#nginx running port
NGINX_PORT='netstat -anp|grep -w 80|grep LISTEN|grep -v TIME_WAIT|wc -l'
#the full path of daemon
NGINX_PROG=$NGINX_HOME/sbin/nginx
#start function
start(){
#check the daemon status first
if [ $NGINX_PORT -ne 0 ]
then
    echo "WARN: $SNAME is already started"
    exit 0;
else
    $NGINX_PROG
    echo "starting $SNAME .....................done"
    exit 0;
fi
}
#stop function
stop(){
    if [ $NGINX_PORT = 0 ]
    then
        echo "WARN: $SNAME has been stopped"
    else
        $NGINX_PROG -s quit
        echo "stopping $SNAME..........................done"
    fi
}
#reload function
restart(){
    if [ -f $PID ]
    then
        $NGINX_PROG -s reload
        echo "restart $SNAME .......................done"
    else
        echo "$PID is not exist!"
        $NGINX_PROG
        echo "start $SNAME ......................... done"
        fi
}
status(){
    if [ $NGINX_PORT = 0 ]
    then
        echo "$SNAME has already stopped!"
    else
        echo "$SNAME is running ok!"
    fi
}
case "$1" in
start)
    start
    ;;
stop)
    stop
    ;;
reload|restart)
    restart
    ;;
status)
    status
    ;;
*)
    echo "usage: $0 {start|stop|reload|restart|status}"
    exit 1
esac

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