Ubuntu通过systemd禁用系统睡眠

参考网址

1. How To: Disable Sleep on Ubuntu Server (unixtutorial.org)

查看系统休眠的记录

sudo systemctl status sleep.target

理论上会返回类似如下的内容，里面会注明系统休眠的时间等信息

root@azhal:~## systemctl status sleep.target
● sleep.target - Sleep
     Loaded: loaded (/lib/systemd/system/sleep.target; static; vendor preset: enabled)
     Active: inactive (dead)
       Docs: man:systemd.special(7)

May 07 18:54:58 azhal systemd[1]: Reached target Sleep.
May 07 20:19:14 azhal systemd[1]: Stopped target Sleep.
May 07 20:39:14 azhal systemd[1]: Reached target Sleep.
May 07 20:52:35 azhal systemd[1]: Stopped target Sleep.

关闭系统休眠

sudo systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target

[引用文章原话] This is obviously a very simple way of disabling power management, but I like it because it’s standard and logical enough – there’s no need to edit config files or create cronjobs manually controlling sleep functionality.

大概翻译过来就是指这样的操作标准且合理，因为这样省去了编辑任何文件的麻烦，并且也达到了禁用休眠的目的。

禁用以后大致会变成这样：

root@azhal:~## systemctl status sleep.target
● sleep.target
     Loaded: masked (Reason: Unit sleep.target is masked.)
     Active: inactive (dead)

May 07 18:54:58 azhal systemd[1]: Reached target Sleep.
May 07 20:19:14 azhal systemd[1]: Stopped target Sleep.
May 07 20:39:14 azhal systemd[1]: Reached target Sleep.
May 07 20:52:35 azhal systemd[1]: Stopped target Sleep.

恢复系统休眠服务器

sudo systemctl unmask sleep.target suspend.target hibernate.target hybrid-sleep.target