A small pre-fix checklist for sick Linux boxes

From	TheLastSysop <thelastsysop@dev.null>
Newsgroups	comp.os.linux.misc
Subject	A small pre-fix checklist for sick Linux boxes
Date	2026-06-09 20:28 +0000
Organization	The Null Device Restoration Society
Message-ID	<0af9a3a88b1e5798c4f3@dev.null> (permalink)

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One small habit that has saved me a lot of time is taking a quick snapshot of
the system before I start "fixing" it.

Not a full forensic ritual, just a few boring commands while the machine is
still in the broken-but-interesting state:

uname -a ip addr ip route systemctl --failed journalctl -b -p warning..alert
--no-pager | tail -100 df -h lsblk -f

If it is a network problem, I add:

ss -tulpn resolvectl status

That little text file often makes the difference between "I changed six things
and now it is worse" and "the default route disappeared after the VPN came up".

Anybody have a similar short checklist they run before touching a sick Linux
box?

-- TheLastSysop

-- 
TheLastSysop <thelastsysop@dev.null>
"I survived the great rm -rf / rehearsal and all I got was this .signature."

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A small pre-fix checklist for sick Linux boxes TheLastSysop <thelastsysop@dev.null> - 2026-06-09 20:28 +0000
  Re: A small pre-fix checklist for sick Linux boxes "Carlos E.R." <robin_listas@es.invalid> - 2026-06-09 22:47 +0200
    Re: A small pre-fix checklist for sick Linux boxes TheLastSysop <thelastsysop@dev.null> - 2026-06-09 20:52 +0000
      Re: A small pre-fix checklist for sick Linux boxes not@telling.you.invalid (Computer Nerd Kev) - 2026-06-10 08:33 +1000
        Re: A small pre-fix checklist for sick Linux boxes TheLastSysop <thelastsysop@dev.null> - 2026-06-09 22:54 +0000
        Re: A small pre-fix checklist for sick Linux boxes Nuno Silva <nunojsilva@invalid.invalid> - 2026-06-10 09:13 +0100
          Re: A small pre-fix checklist for sick Linux boxes TheLastSysop <thelastsysop@dev.null> - 2026-06-10 08:50 +0000
    Re: A small pre-fix checklist for sick Linux boxes 🇵🇱Jacek Marcin Jaworski🇵🇱 <jmj@energokod.gda.pl> - 2026-06-09 23:27 +0200
      Re: A small pre-fix checklist for sick Linux boxes TheLastSysop <thelastsysop@dev.null> - 2026-06-09 22:07 +0000
        Re: A small pre-fix checklist for sick Linux boxes 🇵🇱Jacek Marcin Jaworski🇵🇱 <jmj@energokod.gda.pl> - 2026-06-10 02:24 +0200
          Re: A small pre-fix checklist for sick Linux boxes TheLastSysop <thelastsysop@dev.null> - 2026-06-10 00:26 +0000
            Re: A small pre-fix checklist for sick Linux boxes Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-06-10 01:06 +0000
              Re: A small pre-fix checklist for sick Linux boxes TheLastSysop <thelastsysop@dev.null> - 2026-06-10 01:10 +0000
              Re: A small pre-fix checklist for sick Linux boxes 🇵🇱Jacek Marcin Jaworski🇵🇱 <jmj@energokod.gda.pl> - 2026-06-11 16:46 +0200
  Re: A small pre-fix checklist for sick Linux boxes Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-06-10 00:26 +0000
    Re: A small pre-fix checklist for sick Linux boxes TheLastSysop <thelastsysop@dev.null> - 2026-06-10 00:39 +0000
  Re: A small pre-fix checklist for sick Linux boxes Nuno Silva <nunojsilva@invalid.invalid> - 2026-06-10 09:11 +0100
    Re: A small pre-fix checklist for sick Linux boxes TheLastSysop <thelastsysop@dev.null> - 2026-06-10 08:16 +0000
  Re: A small pre-fix checklist for sick Linux boxes c186282 <c186282@nnada.net> - 2026-06-10 04:13 -0400
    Re: A small pre-fix checklist for sick Linux boxes TheLastSysop <thelastsysop@dev.null> - 2026-06-10 08:17 +0000
  Re: A small pre-fix checklist for sick Linux boxes jayjwa <jayjwa@atr2.ath.cx.invalid> - 2026-06-10 10:07 -0400
    Re: A small pre-fix checklist for sick Linux boxes TheLastSysop <thelastsysop@dev.null> - 2026-06-10 14:10 +0000
      Re: A small pre-fix checklist for sick Linux boxes Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2026-06-10 19:55 +0000
        Re: A small pre-fix checklist for sick Linux boxes TheLastSysop <thelastsysop@dev.null> - 2026-06-10 20:18 +0000
    Re: A small pre-fix checklist for sick Linux boxes Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-06-11 03:19 +0000
      Re: A small pre-fix checklist for sick Linux boxes c186282 <c186282@nnada.net> - 2026-06-11 01:49 -0400
      Re: A small pre-fix checklist for sick Linux boxes rbowman <bowman@montana.com> - 2026-06-11 06:51 +0000

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