Re:Ubuntu 16.04: “Out of memory” errors after upgrade to 4.4...
by JdeBP on Sunday January 29, 2017 @06:23AM
(#13513656)
Since Cieplak mentioned systemd:
* https://freedesktop.org/software/systemd/man/file-hierarchy....
Best parts already mentioned in this thread (pf, jails, etc.) I would add one thing to the list:
https://www.freebsd.org/cgi/man.cgi?hier(7)