sudo usermod -a -G systemd-journal bob

bob现在是会员,退出,登录并且：

id -a bob
uid=1000(bob) gid=1000(bob) groups=1000(bob),190(systemd-journal)

现在它的工作原理：

$journalctl
-- Logs begin at Mon 2015-04-06 09:50:36 BST,end at Thu 2015-04-09 20:20:16 BST. --
Apr 06 09:50:36 localhost.localdomain chronyd[941]: Can't synchronise: no majority
Apr 06 09:50:36 localhost.localdomain chronyd[941]: Selected source 91.206.8.70
Apr 06 09:51:07 localhost.localdomain systemd[1]: Time has been changed

我找到了这个：

http://www.freedesktop.org/software/systemd/man/systemd-journald.service.html

还有这个：

http://0pointer.de/blog/projects/journalctl.html