shell脚本之nginx自动化脚本

  #!/bin/bash  . /etc/init.d/functions  function usage() {    echo $"usage:$0 {start|stop|restart}"    exit 1  }  function start() {    /usr/local/nginx/sbin/nginx     sleep 1    if [ `netstat -antlpe | grep nginx | wc -l` -ge 0 ];then   action "nginx is started." /bin/true     else   action "nginx is started." /bin/false    fi  }  function stop() {    killall nginx &>/dev/null    sleep 1    if [ `netstat -antlpe | grep nginx | wc -l` -eq 0 ];then   action "nginx is stopped." /bin/true    else   action "nginx is stopped." /bin/false    fi  }  function main() {    if [ $# -ne 1 ];then   usage $0    fi    case $1 in    start)   start   ;;   stop)   stop   ;;   restart)   stop   start   ;;   *)   usage $0   ;;    esac  }  main $*