1 前言

一个问题，一篇文章，一出故事。
某些场景，我们使用简单的命令去停止或者启动服务，会遇到出错的情况，于是我们需要带自动检测功能的函数去执行服务的启动或停止。

2 最佳实践

2.1 创建脚本

vim ~/scripts/serviceControl.sh

加入如下设置，

#!/bin/bash

stopService() {
    local serviceName=$1

    if systemctl is-active --quiet "$serviceName"; then
        echo "Stopping $serviceName..."
        systemctl stop "$serviceName"

        while systemctl is-active --quiet "$serviceName"; do
            sleep 1
        done

        echo "$serviceName has been stopped."
    else
        echo "$serviceName is not running."
    fi
}

startService() {
    local serviceName=$1

    if ! systemctl is-active --quiet "$serviceName"; then
        echo "Starting $serviceName..."
        systemctl start "$serviceName"

        while ! systemctl is-active --quiet "$serviceName"; do
            sleep 1
        done

        echo "$serviceName has been started."
    else
        echo "$serviceName is already running."
    fi
}

stopService "openvpn"
startService "openvpn"

2.2 测试脚本

bash ~/scripts/serviceControl.sh