python - 如何从 systemctl status 的输出中获取单个值

Question

[root@localhost etc]# systemctl status blu_av
● blu_av.service - avscan
   Loaded: loaded (/etc/systemd/system/blu_av.service; disabled; vendor preset: disabled)
   Active: active (running) since Fri 2018-03-16 16:31:14 IST; 3s ago
 Main PID: 31934 (av)
   CGroup: /system.slice/blu_av.service
           ├─31934 /opt/services/av
           └─31956 /opt/services/av

Mar 16 16:31:14 localhost.localdomain systemd[1]: Started avscan.
Mar 16 16:31:14 localhost.localdomain systemd[1]: Starting avscan...

如果以上是我状态的输出。我想使用 python 脚本检索服务名称、正常运行时间和状态。

Answer 1

systemd服务有一个完整的属性列表。例如获取开始时间；你可以运行:

systemctl show your.service --property=ActiveEnterTimestamp

这会给出类似的东西:

ActiveEnterTimestamp=Fri 2019-05-03 09:35:02 CEST

查看所有属性的列表；赶紧跑

systemctl show your.service