How can a poor old non-root user get the core dumps systemd ate?

Question

As we know, with systemd, core dumps don't just get written to the current directory but to some obscure journal. Now, I'm a poor old non-root user on some machine, and - I want my core dumps! I can't follow the suggestions to edit files in /etc or run systemd utilities as root. Can I still get my core dump files somehow?

PS - If it matters, I'm on Fedora 22.

meuh · Accepted Answer · 2016-04-11T09:42:28.527

7

Use systemd's coredumpctl to list and retrieve your core dumps. Use the PID or name of the program to select one to dump (to file -o ...) or to run gdb on.

$ coredumpctl list
TIME                            PID   UID   GID SIG PRESENT EXE
Mon 2016-04-11 11:18:23 CEST  21538  1000  1000  11 * /usr/bin/sleep
$ coredumpctl info 21538
           PID: 21538 (sleep)
           UID: 1000 (meuh)
           ...
$ coredumpctl -o core dump sleep
$ coredumpctl gdb 21538

(Some intermediate versions of systemd use the name systemd-coredumpctl). Your userid must be in group systemd-journal to be able to do this without becoming root.

edited Apr 11 '16 at 09:42

answered Apr 11 '16 at 08:15

meuh

51,383

I take it I need to specify some list index instead of "dump" in your second line? – einpoklum Apr 11 '16 at 08:56
Yes, you need to provide a "match", eg the program that core dumped, or its process id etc. – meuh Apr 11 '16 at 09:36

How can a poor old non-root user get the core dumps systemd ate?

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