Linux开机执行命令

编辑 /etc/rc.local 文件

vim /etc/rc.local

在文件底部加入需要执行的命令，示例如下：

#!/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
ip route delete default via 172.19.79.253 dev eth0 proto dhcp metric 100  #示例

保存，reboot 重启，查看命令是否正常执行。
如果命令没有正常执行，可能是未设置 /etc/rc.local 文件的执行权限：

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

再次重启，就可以正常自动执行了。

服务指令

systemctl start rc-local.service
systemctl enable rc-local.service
systemctl status rc-local.service

自启动

#!/bin/bash

# 定义要自启动的脚本路径
SCRIPT_PATH="/path/to/your/script.sh"

# 定义要写入到 /etc/rc.local 中的自启动命令
STARTUP_CMD="bash ${SCRIPT_PATH}"

# 将自启动命令写入 /etc/rc.local 中
sed -i "\$i ${STARTUP_CMD}" /etc/rc.local

# 授权脚本执行权限
chmod +x ${SCRIPT_PATH}

# 定义删除脚本和自启动命令的函数
cleanup() {
  # 从 /etc/rc.local 中删除自启动命令
  sed -i "/${STARTUP_CMD}/d" /etc/rc.local
  # 删除脚本文件
  rm -f ${SCRIPT_PATH}
}

# 注册清理函数，以便在脚本执行过程中发生异常或者被终止时能够执行
trap cleanup EXIT

# 在脚本中加入要执行的操作，比如：
echo "Hello World"
# 或者启动某个服务，比如：
service nginx start

# 完成自启动脚本的编写