Two additional commands I regularly use as a Sysadmin are
systemctl statuswithout any unit to list show the general system status (lists units that are running, units that are starting and failed units right at the top) And thensystemctl list-units --failedTo show me just the failed units and did deeper what the problem is.On a properly set up system I should quickly be able to ascertain if everything is “up and running” just by systemds status
You can also use
systemctl status $pidto find out what service a process is from.This and
systemctl cat $unitare my favorites.You can … WHAT!?
Wow I did not know that. Incredibly helpful
Oooh. Thank you, I didn’t know that.
You can skip
list-unitsand just dosystemctl --failedYou can even drop the
list-unitsand just usesystemctl --failed
Here’s some more examples:
Systemctl edit: create an extension for the unit file and add some changes
S edit --full: edit the full unit file (and timer too iirc)
S enable --now:enable + start
S disable --now: disable + stopIs there an equivalent in SysVInit?
No. But you can run some of the init scripts with ‘status’ and they might print something. And telinit can do a few basic things.
There always is. Usually easier.
PCLinuxOS, an offshoot of Mandriva (itself the child of the Mandrake/Conectiva union, both a long derivative of RedHat), still avoids systemd to provide a distro with massive versatility and fast boots.
