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Whenever I open the zsh shell, it outputs these 3 lines:

compaudit:148: unknown group
compaudit:148: unknown group
compaudit:148: unknown group

When I run the compaudit command, it outputs this line:

compaudit:148: unknown group

My suspicion is that this has something to do with my corrupted /etc/group file (which caused my admin account to lose sudo privilege, but I have fixed that with recovery mode; however, that corrupted file also caused a lot of group-related error that I'm unable to fix). I used to backup my system on a hard drive, but it has recently failed and I haven't replace it.

Is there anyway to fix this, and if it's because of the corrupted /etc/group file, is there any way to recover it? I'm using Ubuntu 16.04

  • You can ran compaudit via strace and it shows to you more specific info about your problem. – Yurij Goncharuk Apr 3 '18 at 20:35
  • @YurijGoncharuk Thanks, can you tell me the specific command for that? – PyGeek03 Apr 5 '18 at 13:06
  • I wrote about it. The command name is strace. If you don't have it, the install it from repository. – Yurij Goncharuk Apr 5 '18 at 13:08
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    @YurijGoncharuk, compaudit is a zsh function, you can't run it under strace (other than by straceing a new zsh instance that runs that function, but that wouldn't be helpful). – Stéphane Chazelas Apr 15 '18 at 16:37
  • I didn't know that compaudit is ksh component. I just suppose what could happens and gave advice. It was wrong. Sorry @PyGeek03. – Yurij Goncharuk Apr 15 '18 at 22:19
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That's an error message that is output by for instance:

echo *(g:nosuchgroup:)

The compaudit function does do this kind of thing when checking the permissions and ownership of the $fpath components.

For instance, for Debian derivatives (like Ubuntu), at one point, it expands the ${^_i_ulwdirs}(Nf:g+ws:^g:staff:,f:o+w:,^u0) glob.

Debian systems normally have a staff group, but if your /etc/group is corrupted and doesn't have one, you'd get that error message.

I get the exact same error message if I rename the staff group to something else on a Linux Mint 18.3 system (based on Ubuntu 16.04).

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