Shell脚本启动/停止/重启

启动/停止/重启shell脚本boot.sh

#!/bin/bash
export JAVA_HOME=/usr/local/java/jdk1.8.0_211
export JRE_HOME=/$JAVA_HOME/jre
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin

WORKDIR=$(cd $(dirname $0); pwd)

#这里可替换为你自己的执行程序，其他代码无需更改

APP_NAME=${WORKDIR}/ExcelReader-0.0.1-SNAPSHOT.jar
#使用说明，用来提示输入参数
usage() {
    echo "Usage: sh boot.sh [start|stop|restart|status]"
    exit 1  
}

#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 1
  else
    return 0
  fi
}

#启动方法
start(){
  is_exist
  if [ $? -eq 0 ]; then 
    echo "${APP_NAME} is already running. pid=${pid}"
  else
    nohup java -jar ${APP_NAME}  >/dev/null 2>&1 &
    #Xms Xmx  指定虚拟内存上下限
    #nohup ${JRE_HOME}/bin/java -Xms128m -Xmx512m -jar ${APP_NAME} >/dev/null 2>&1 &
    echo "..."
    sleep 2 
    echo "..."
    sleep 3 
    is_exist
    if [ $? -eq 0 ]; then 
      echo "${APP_NAME} is running success. pid=${pid}"
    fi
  fi
}

#停止方法
stop(){
  is_exist
  if [ $? -eq "0" ]; then
    kill -9 $pid
    echo "..."
    sleep 2
    is_exist
    if [ $? -eq 0 ]; then
      echo "${APP_NAME} still in the running. pid=${pid}"
    else
      echo "${APP_NAME} has stopped running."
    fi
  else
    echo "${APP_NAME} is not running"
  fi
}

#输出运行状态
status(){
  is_exist
  if [ $? -eq "0" ]; then
    echo "${APP_NAME} is running. Pid is ${pid}"
  else
    echo "${APP_NAME} is NOT running."
  fi
}

#重启
restart(){
  stop
  #sleep 5
  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