[linuxidc@localhost ~]$ journalctl _PID=787
-- Logs begin at 三 2018-10-17 18:58:40 CST, end at 三 2018-10-17 23:07:16 CST.
10月 17 18:58:49 localhost.localdomain NetworkManager[787]: <info> [1539773929.
10月 17 18:58:49 localhost.localdomain NetworkManager[787]: <info> [1539773929.
10月 17 18:58:49 localhost.localdomain NetworkManager[787]: <info> [1539773929.
10月 17 18:58:49 localhost.localdomain NetworkManager[787]: <info> [1539773929.
10月 17 18:58:49 localhost.localdomain NetworkManager[787]: <info> [1539773929.
10月 17 18:58:49 localhost.localdomain NetworkManager[787]: <info> [1539773929.
10月 17 18:58:49 localhost.localdomain NetworkManager[787]: <info> [1539773929.
10月 17 18:58:49 localhost.localdomain NetworkManager[787]: <info> [1539773929.
10月 17 18:58:49 localhost.localdomain NetworkManager[787]: <info> [1539773929.
10月 17 18:58:49 localhost.localdomain NetworkManager[787]: <info> [1539773929.
10月 17 18:58:49 localhost.localdomain NetworkManager[787]: <info> [1539773929.
10月 17 18:58:49 localhost.localdomain NetworkManager[787]: <info> [1539773929.
10月 17 18:58:49 localhost.localdomain NetworkManager[787]: <info> [1539773929.
注意：systemd日志的配置文件是/etc/systemd/journald.conf。