coredumpctl systemd Developer Zbigniew Jędrzejewski-Szmek zbyszek@in.waw.pl coredumpctl 1 coredumpctl Retrieve and process saved core dumps and metadata coredumpctl OPTIONS COMMAND PID|COMM|EXE|MATCH Description coredumpctl is a tool that can be used to retrieve and process core dumps and metadata which were saved by systemd-coredump8. Options The following options are understood: Do not print column headers. Show information of a single core dump only, instead of listing all known core dumps. FIELD FIELD Print all possible data values the specified field takes in matching core dump entries of the journal. FILE FILE Write the core to . DIR DIR Use the journal files in the specified . Commands The following commands are understood: list List core dumps captured in the journal matching specified characteristics. If no command is specified, this is the implied default. It's worth noting that different restrictions apply to data saved in the journal and core dump files saved in /var/lib/systemd/coredump, see overview in systemd-coredump8. Thus it may very well happen that a particular core dump is still listed in the journal while its corresponding core dump file has already been removed. info Show detailed information about core dumps captured in the journal. dump Extract the last core dump matching specified characteristics. The core dump will be written on standard output, unless an output file is specified with . gdb Invoke the GNU debugger on the last core dump matching specified characteristics. Matching A match can be: PID Process ID of the process that dumped core. An integer. COMM Name of the executable (matches ). Must not contain slashes. EXE Path to the executable (matches ). Must contain at least one slash. MATCH General journalctl predicates (see journalctl1). Must contain an equal sign. Exit status On success, 0 is returned; otherwise, a non-zero failure code is returned. Not finding any matching core dumps is treated as failure. Examples List all the core dumps of a program named foo # coredumpctl list foo Invoke gdb on the last core dump # coredumpctl gdb Show information about a process that dumped core, matching by its PID 6654 # coredumpctl info 6654 Extract the last core dump of /usr/bin/bar to a file named <filename noindex="true">bar.coredump</filename> # coredumpctl -o bar.coredump dump /usr/bin/bar See Also systemd-coredump8, coredump.conf5, systemd-journald.service8, gdb1