脚本内容jiaobenname.sh

#!/bin/bash
# 设置环境变量
export JAVA_HOME=/usr/local/java/jdk-17.0.10
export CLASSPATH=.:$JAVA_HOME/lib/
export PATH=.:$JAVA_HOME/bin:$PATHwhile true; doif ps aux | grep -v grep | grep "tomcat" > /dev/null; thenecho "tomcat started..."elseecho "tomcat is not running. Restarting..."nohup tomcat/bin/startup.sh > /dev/null 2>&1 &fisleep 30
done

标红目录改成你的

执行命令

sudo vim /etc/systemd/system/ziqidong.service

i

加入

[Unit]
Description=Process Watchdog Service
After=network.target[Service]
Type=simple
ExecStart=/nidemulu/jiaobenname.sh  
Restart=on-failure[Install]
WantedBy=multi-user.target

标红目录改成你的

esc

:wq

记得给目录赋权

chmod -R 777 /nidemulu/

chmod -R 777 /etc/systemd/system/

加载 systemd 配置：

sudo systemctl daemon-reload

开机自启动：

sudo systemctl enable ziqidong.service

启动服务：

sudo systemctl start ziqidong.service

检查服务状态：

sudo systemctl status ziqidong.service

# 关闭后台服务

sudo systemctl stop ziqidong.service

# 重启服务
sudo systemctl restart ziqidong.service

我的脚本如下参考

#!/bin/bash
# 设置环境变量
export JAVA_HOME=/usr/local/java/jdk-17.0.10
export CLASSPATH=.:$JAVA_HOME/lib/
export PATH=.:$JAVA_HOME/bin:$PATHRUOYI_PATH="/xx/ruoyi-admin.jar"RUOYI_LOG_FILE="/xx/rouyimonitor.log"while true; doif ps aux | grep -v grep | grep "redis-server" > /dev/null; thenecho "redis-server started..."elseecho "redis-server is not running. Restarting..."redis-server /xxx/redis.conffiif ps aux | grep -v grep | grep "ruoyi-admin.jar" > /dev/null; thenecho "ruoyi-admin.jar started. Check the log at $RUOYI_LOG_FILE"elseecho "ruoyi-admin.jar is not running. Restarting..."nohup java --add-opens java.base/java.lang=ALL-UNNAMED --add-opens java.base/sun.net.util=ALL-UNNAMED -jar -Xms1024M -Xmx2048M -XX:MetaspaceSize=1024M -XX:MaxMetaspaceSize=2048M $RUOYI_PATH > $RUOYI_LOG_FILE 2>&1 &fiif ps aux | grep -v grep | grep "tomcat" > /dev/null; thenecho "tomcat started..."elseecho "tomcat is not running. Restarting..."nohup /xx/startup.sh > /dev/null 2>&1 &fisleep 30
done