On Tue 25 Jan 2022, at 02:54, Greg Wooledge <g...@wooledge.org> wrote: > On Tue, Jan 25, 2022 at 01:31:35AM +0000, Gareth Evans wrote: >> /var/run$ sudo touch utmp >> /var/run$ sudo chown root:utmp utmp >> /var/run$ sudo chmod 664 utmp >> /var/run$ ls -l utmp >> -rw-rw-r-- 1 root utmp 0 Jan 25 00:08 utmp >> /var/run$ who >> /var/run$ >> [logout, login] >> /var/run$ ls -l /var/run/utmp >> -rw-rw-r-- 1 root utmp 384 Jan 25 00:17 /var/run/utmp >> $ who >> user tty7 2022-01-25 00:17 (:0) >> $ sudo reboot >> ... >> $ ls -l /var/run/utmp >> ls: cannot access '/var/run/utmp': No such file or directory > > A google search led me to <https://bugs.archlinux.org/task/47749> > which says that the /run/utmp file is supposed to be created by > "tmpfiles", specifically by the instructions in the configuration > file /usr/lib/tmpfiles.d/systemd.conf . >
> On my system, /usr/lib/tmpfiles.d/systemd.conf contains this line: > > F! /run/utmp 0664 root utmp - > > Does your system have this file, and if so, does it contain that line? Thanks, yes: $ sudo cat /usr/lib/tmpfiles.d/systemd.conf | grep utmp F! /run/utmp 0664 root utmp -
