【shell编程】 nginx 服务的启动脚本

#!/bin/bash
#
# nginx      This shell script takes care of starting and stopping
#            standalone nginx.

# config: /usr/local/nginx/conf/nginx.conf

# Source function library.

. /etc/rc.d/init.d/functions

 RETVAL=0
 prog="nginx"

start() {
      #start nginx
      [ -x /usr/local/nginx/sbin/nginx ] || exit 4
      [ -z /usr/local/nginx/conf/nginx.conf ] && exit 6
      echo -n $"Starting $prog: "
      daemon /usr/local/nginx/sbin/nginx 2>/dev/null
      RETVAL=$?
      echo
      return $RETVAL     
}

stop () {
     #stop nginx
     echo -n $"Shutting down $prog: "
     daemon /usr/local/nginx/sbin/nginx -s stop 2>/dev/null
     RETVAL=$?
     echo
     return $RETVAL
}

reload () {
     #reload  nginx
     echo -n $"Reload the config of $prog: "
     daemon /usr/local/nginx/sbin/nginx -s reload 2>/dev/null
     RETVAL=$?
     echo
     return $RETVAL
}



# See how we were called.
case "$1" in
  start)
        start
        ;;
  stop)
        stop
        ;;
  restart)
        stop
        start
        RETVAL=$?
        ;;
  reload)
        reload
        ;;
  status)
        status $prog
        RETVAL=$?
        ;;
  *)
        echo $"Usage: $0 {start|stop|restart|reload|status}"
        exit 2
esac

exit $RETVAL