COREDUMPCTL(1) coredumpctl COREDUMPCTL(1)
NAME
coredumpctl - Retrieve coredumps from the journal
SYNOPSIS
coredumpctl [OPTIONS...] {COMMAND} [PID|COMM|EXE|MATCH...]
DESCRIPTION
coredumpctl may be used to retrieve coredumps from systemd-journald(8).
OPTIONS
The following options are understood:
--no-legend
Do not print column headers.
-1
Show information of a single coredump only, instead of listing all
known coredumps.
-F, --field=
Print all possible data values the specified field takes in
matching coredump entries of the journal.
-o, --output=FILE
Write the core to FILE.
-h, --help
Print a short help text and exit.
--version
Print a short version string and exit.
--no-pager
Do not pipe output into a pager.
The following commands are understood:
list
List coredumps captured in the journal matching specified
characteristics. If no command is specified, this is the implied
default.
info
Show detailed information about coredumps captured in the journal.
dump
Extract the last coredump matching specified characteristics. The
coredump will be written on standard output, unless an output file
is specified with -o/--output.
gdb
Invoke the GNU debugger on the last coredump 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 COREDUMP_COMM=). Must not contain
slashes.
EXE
Path to the executable (matches COREDUMP_EXE=). Must contain at
least one slash.
MATCH
General journalctl predicates (see journalctl(1)). Must contain an
equal sign.
EXIT STATUS
On success, 0 is returned; otherwise, a non-zero failure code is
returned. Not finding any matching coredumps is treated as failure.
EXAMPLES
Example 1. List all the coredumps of a program named foo
# coredumpctl list foo
Example 2. Invoke gdb on the last coredump
# coredumpctl gdb
Example 3. Show information about a process that dumped core, matching
by its PID 6654
# coredumpctl info 6654
Example 4. Extract the last coredump of /usr/bin/bar to a file named
bar.coredump
# coredumpctl -o bar.coredump dump /usr/bin/bar
SEE ALSO
systemd-coredump(8), coredump.conf(5), systemd-journald.service(8),
gdb(1)
systemd 219 COREDUMPCTL(1)