一、创建执行服务脚本

示例如下，三个文件：

• backup.service
• backup.timer
• run_backup.sh

文件内容分别为
backup.service

[Unit]
Description=leanote backup.
After=network.target [Service]
User=changhonghe
WorkingDirectory=/home/changhonghe/github/leanoteBackup  # 此处替换运行目录
ExecStart=/usr/bin/bash /home/changhonghe/github/leanoteBackup/run_backup.sh >> git.log # 此处编写脚本运行路径，建议绝对路径[Install]
WantedBy=multi-user.target

backup.timer

[Unit]
Description=Run Leanote_backup.[Timer]
OnBootSec=0s
OnUnitActiveSec=30min
Unit=leanoteBackup.service  # 运行的service服务

run_backup.sh

# 这个就不多说了，你的shell执行脚本

脚本生效

sudo cp ddns.timer /usr/lib/systemd/system/
sudo cp ddns.service /usr/lib/systemd/system/sudo systemctl daemon-reload  #加载服务
sudo systemctl start leanoteBackup.service
sudo systemctl start leanoteBackup.timer