https://www.freedesktop.org/software/systemd/man/sysusers.d.html#
u Create a system user and group of the specified name should they not exist yet. The user's primary group will be set to the group bearing the same name unless the ID field specifies it. The account will be created disabled, so that logins are not allowed. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1915936 Title: systemd-coredump user is create by something other than its derived systemd packages Status in systemd package in Ubuntu: New Bug description: systemd-coredump binary package is instructed as follows: #debian/systemd-coredump.postinst: adduser --quiet --system --group --no-create-home --home /run/systemd \ --gecos "systemd Core Dumper" systemd-coredump But one doesn't need this package to be installed to have the systemd- coredump user created. This was taken from a focal 20.04.2 fresh installation (Right after a vanilla installation): # cat /etc/passwd: ... systemd-coredump:x:999:999:systemd Core Dumper:/:/usr/sbin/nologin ... # dpkg -l | grep -i systemd ii dbus-user-session 1.12.16-2ubuntu2.1 amd64 simple interprocess messaging system (systemd --user integration) ii libnss-systemd:amd64 245.4-4ubuntu3.4 amd64 nss module providing dynamic user and group name resolution ii libpam-systemd:amd64 245.4-4ubuntu3.4 amd64 system and service manager - PAM module ii libsystemd0:amd64 245.4-4ubuntu3.4 amd64 systemd utility library ii networkd-dispatcher 2.0.1-1 all Dispatcher service for systemd-networkd connection status changes ii python3-systemd 234-3build2 amd64 Python 3 bindings for systemd ii systemd 245.4-4ubuntu3.4 amd64 system and service manager ii systemd-sysv 245.4-4ubuntu3.4 amd64 system and service manager - SysV links ii systemd-timesyncd 245.4-4ubuntu3.4 amd64 minimalistic service to synchronize local time with NTP servers # /var/log/syslog syslog:Feb 17 15:31:56 test systemd-sysusers[402]: Creating group systemd-coredump with gid 999. syslog:Feb 17 15:31:56 test systemd-sysusers[402]: Creating user systemd-coredump (systemd Core Dumper) with uid 999 and gid 999. Additionnally, you may notice the home directory during the user creation at installation sets it to "/" as opposed to "/run/systemd" directive in the appropriate postint. It is contradictory. * Why systemd-coredump user is created at installation time and/or without 'systemd-coredump' package installed ? * Why this early creation set the home directory to "/" ? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1915936/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp