#!/bin/bash APP_NAME=/data/wwwroot/app.jar
#使用说明,用来提示输入参数
usage() {
echo "Usage: sh app.sh [start|stop|restart|status]"
exit
} #检查程序是否在运行
is_exist(){
pid=`ps -ef|grep $APP_NAME|grep -v grep|awk '{print $2}'`
#如果不存在返回1,存在返回0
if [ -z "${pid}" ]; then
return
else
return
fi
} #启动方法
start(){
is_exist
if [ $? -eq ]; then
echo "${APP_NAME} is already running. pid=${pid}"
else
nohup java -jar ${APP_NAME} >app.out >& &
fi
} #停止方法
stop(){
is_exist
if [ $? -eq "" ]; then
kill - $pid
else
echo "${APP_NAME} is not running"
fi
} #输出运行状态
status(){
is_exist
if [ $? -eq "" ]; then
echo "${APP_NAME} is running. Pid is ${pid}"
else
echo "${APP_NAME} is NOT running."
fi
} #重启
restart(){
stop
sleep
start
} #根据输入参数,选择执行对应方法,不输入则执行使用说明
case "$1" in
"start")
start
;;
"stop")
stop
;;
"status")
status
;;
"restart")
restart
;;
*)
usage
;;
esac