本篇博客将探讨一下在 Linux 操作系统中如何实现在启动时执行命令或脚本。

1. 检查配置文件

首先我们要提到一个rc配置文件，rc.local文件。

cat /etc/rc.d/rc.local

可以看到配置文件的解释说明，这是一个用户个性化设置的脚本文件。

#!/bin/bash
# THIS FILE IS ADDED FOR COMPATIBILITY PURPOSES
#
# It is highly advisable to create own systemd services or udev rules
# to run scripts during boot instead of using this file.
#
# In contrast to previous versions due to parallel execution during boot
# this script will NOT be run after all other services.
#
# Please note that you must run 'chmod +x /etc/rc.d/rc.local' to ensure
# that this script will be executed during boot.

touch /var/lock/subsys/local

2. 配置文件授权

授予 /etc/rc.d/rc.local 文件执行权限

chmod +x /etc/rc.d/rc.local

3. 添加新的自启项

此处以记录每次开机时间到指定文件为例，每次开机都把时间记录写在根目录下的/start.log文件中

touch /start.log
# 此处以年月日时分秒的格式记录
date "+%Y-%m-%d %H:%M:%S" >> /start.log