Linux 中防止重复执行 jar 的脚本指南

Question

Jar 应该在后台运行，而不是多余地运行。 即使出现重复执行，也必须全部终止

Answer 1

#!/bin/bash
ENV=dev
SER_NAME=batch
JAR_FULL=/was/batch/test.jar
case $1 in
    restart)
        if apid=$(pgrep -f $SER_NAME)
        then
            for pid in $apid; do
                echo "Stop $SER_NAME pid : $pid"
                kill -9 $pid
            done
        else
            echo "$SER_NAME is not running ... "
        fi
        nohup java -jar $JAR_FULL --spring.profiles.active=$ENV > /dev/null 2>&1 &
        echo "$SER_NAME" start"
    ;;
    stop)
        if apid=$(pgrep -f $SER_NAME)
        then
            for pid in $apid; do
                echo "Stop $SER_NAME - pid : $pid"
                kill -9 $pid
            done
        else
            echo "$SER_NAME is not running ..."
        fi
    ;;
    start)
        if apid=$(pgrep -f $SER_NAME)
        then
            echo "$SER_NAME is already running ..."
            for pid in $apid; do
                echo "Running $SER_NAME -pid : $pid"
            done
        else
            nohup java -jar $JAR_FULL --spring.profiles.active=$ENV > /dev/null 2>&1 &
            echo "$SER_NAME start!"
        fi
    ;;
esac

示例）run.sh

控制台）chmod 755 run.sh

控制台）./run.sh开始

启动或停止或重新启动