The man page for systemctl says:
list-units [PATTERN...] List known units (subject to limitations specified with -t). If one or more PATTERNs are specified, only units matching one of them are shown.
This is the default command.
My question is what does it mean by
When I execute
systemctl list-units I get relatively long list of the loaded units. But if I add a third argument I get an error message
Too many arguments. So I am curious as to what parameters are valid for the
[PATTERN] argument listed in the man page.
(I'm running Arch Linux and have version 227 of systemd)