Where does it come from? Now that I’m looking, it’s actually a mystery to me. On a debian-installed system, I see an irc line in /usr/lib/sysusers.d/basic.conf which dpkg -S shows coming from the systemd package (version 247.3-6). But, on the minimal debian:bullseye docker image, there is no systemd package installed, or any sysusers-related files, but there is still an irc user in /etc/passwd. Furthermore, the source for the debian stable systemd basic.conf.in does not have an irc line.
Debian is a free operating system (OS) for your computer. An operating system is the set of basic programs and utilities that make your computer run. Debian provides more than a pure OS: it comes with over 59000 packages, precompiled software bundled up in a nice format for easy installation on your machine.
It appears to be used by, at least,
ircd-hybridandircd-irc2. See https://codesearch.debian.net/search?q=run%2Fircd&page=3 for more references to it.Where does it come from? Now that I’m looking, it’s actually a mystery to me. On a debian-installed system, I see an
ircline in/usr/lib/sysusers.d/basic.confwhichdpkg -Sshows coming from thesystemdpackage (version247.3-6). But, on the minimaldebian:bullseyedocker image, there is nosystemdpackage installed, or any sysusers-related files, but there is still anircuser in/etc/passwd. Furthermore, the source for the debian stable systemdbasic.conf.indoes not have anircline.