[Bug 2146818] Re: `who -b` not working

[Simon Johnsson]

Update:

$ who -a /var/log/wtmp

Does provide output on my system. However, the problem seems to be that
`who -b` attempts to look for `/var/run/utmp` and fails as the file does
not exist on Ubuntu 26.04.

The GNU version encounters the same problem, but will instead fallback
to checking systemd information instead such as `/run/systemd/sessions`
and `/var/lib/systemd/random-seed`.

I found that this discussion mentions the bug, but no issue seems to
have been filed:
https://github.com/uutils/coreutils/issues/3219#issuecomment-3539429981

I will forward this upstream as a new issue.

** Bug watch added: github.com/uutils/coreutils/issues #3219
   https://github.com/uutils/coreutils/issues/3219

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https://bugs.launchpad.net/bugs/2146818

Title:
  `who -b` not working

Status in rust-coreutils package in Ubuntu:
  Triaged

Bug description:
  `who -b` isn't working in Ubuntu 26.04. It doesn't print anything.

  $ who -b

  $ gnuwho -b
           system boot  2026-03-30 10:56

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