Ubuntu 20.04 添加自定义开机执行脚本

创建 systemd 服务文件/etc/systemd/system/swapon.service

[Unit]
After=network.target

[Service]
ExecStart=/usr/local/bin/swapon.sh

[Install]
WantedBy=default.target

创建开机执行脚本/usr/local/bin/swapon.sh

#!/bin/bash

sudo swapon /swapfile

权限设置
sudo chmod 744 /usr/local/bin/swapon.sh
sudo chmod 664 /etc/systemd/system/swapon.service

启动服务单元
sudo systemctl daemon-reload
sudo systemctl enable swapon.service
sudo systemctl start swapon.service
sudo systemctl status swapon.service