COREDUMPCTL(1)

  .SH "NAME" coredumpctl - Retrieve and process saved core dumps and metadata
  .SH "SYNOPSIS"
    .HP u
      coredumpctl
       [OPTIONS...]
       {COMMAND}
       [PID|COMM|EXE|MATCH...]

  .SH "DESCRIPTION"

    .PP coredumpctl is a tool that can be used to retrieve and process core dumps and metadata which were saved by systemd-coredump(8).

  .SH "OPTIONS"

    .PP The following options are understood:

      .PP -h, --help

          Print a short help text and exit.
      .RE
          .PP --version

              Print a short version string and exit.

          .RE
              .PP --no-legend

                    Do not print column headers.
                  .RE
                  .PP --no-pager

                      Do not pipe output into a pager.

                  .RE
                      .PP -1

                            Show information of a single core dump only, instead of listing all known core dumps.
                          .RE
                          .PP -S, --since

                                Only print entries which are since the specified date.
                              .RE
                              .PP -U, --until

                                    Only print entries which are until the specified date.
                                  .RE
                                  .PP -r, --reverse

                                        Reverse output so that the newest entries are displayed first.
                                      .RE
                                      .PP -F FIELD, --field=FIELD

                                            Print all possible data values the specified field takes in matching core dump entries of the journal.
                                          .RE
                                          .PP -o FILE, --output=FILE

                                                Write the core to FILE.
                                              .RE
                                              .PP -D DIR, --directory=DIR

                                                    Use the journal files in the specified DIR.
                                                  .RE
                                                  .PP -q, --quiet

                                                        Suppresses informational messages about lack of access to journal files and possible in-flight coredumps.
                                                      .RE

                                                  .SH "COMMANDS"

                                                    .PP The following commands are understood:

                                                      .PP list

                                                            List core dumps captured in the journal matching specified characteristics. If no command is specified, this is the implied default.

                                                            The output is designed to be human readable and contains list contains a table with the following columns:

                                                              .PP TIME

                                                                    The timestamp of the crash, as reported by the kernel.

                                                                  .RE
                                                                  .PP PID

                                                                        The identifier of the process that crashed.

                                                                      .RE
                                                                      .PP UID, GID

                                                                            The user and group identifiers of the process that crashed.

                                                                          .RE
                                                                          .PP SIGNAL

                                                                                The signal that caused the process to crash, when applicable.
                                                                              .RE
                                                                              .PP COREFILE

                                                                                    Information whether the coredump was stored, and whether it is still accessible: none means the core was not stored, - means that it was not available (for example because the process was not terminated by a signal), present means that the core file is accessible by the current user, journal means that the core was stored in the journal, truncated is the same as one of the previous two, but the core was too large and was not stored in its entirety, error means that the core file cannot be accessed, most likely because of insufficient permissions, and missing means that the core was stored in a file, but this file has since been removed.
                                                                                  .RE
                                                                                  .PP EXE

                                                                                        The full path to the executable. For backtraces of scripts this is the name of the interpreter.
                                                                                      .RE
                                                                                    .sp
                                                                                    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-coredump(8). 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.
                                                                                  .RE
                                                                                  .PP info

                                                                                        Show detailed information about core dumps captured in the journal.
                                                                                      .RE
                                                                                      .PP 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 --output=.
                                                                                          .RE
                                                                                          .PP gdb

                                                                                                Invoke the GNU debugger on the last core dump matching specified characteristics.
                                                                                              .RE

                                                                                          .SH "MATCHING"

                                                                                            .PP A match can be:

                                                                                              .PP PID

                                                                                                    Process ID of the process that dumped core. An integer.
                                                                                                  .RE
                                                                                                  .PP COMM

                                                                                                        Name of the executable (matches COREDUMP_COMM=). Must not contain slashes.
                                                                                                      .RE
                                                                                                      .PP EXE

                                                                                                            Path to the executable (matches COREDUMP_EXE=). Must contain at least one slash.
                                                                                                          .RE
                                                                                                          .PP MATCH

                                                                                                                General journalctl predicate (see journalctl(1)). Must contain an equals sign (=).
                                                                                                              .RE

                                                                                                          .SH "EXIT STATUS"

                                                                                                            .PP On success, 0 is returned; otherwise, a non-zero failure code is returned. Not finding any matching core dumps is treated as failure.

                                                                                                          .SH "EXAMPLES"

                                                                                                            .PP Example 1. List all the core dumps of a program named foo

                                                                                                            # coredumpctl list foo

                                                                                                            .PP Example 2. Invoke gdb on the last core dump

                                                                                                            # coredumpctl gdb

                                                                                                            .PP Example 3. Show information about a process that dumped core, matching by its PID 6654

                                                                                                            # coredumpctl info 6654

                                                                                                            .PP Example 4. Extract the last core dump of /usr/bin/bar to a file named bar.coredump

                                                                                                            # coredumpctl -o bar.coredump dump /usr/bin/bar

                                                                                                          .SH "SEE ALSO"

                                                                                                            .PP systemd-coredump(8), coredump.conf(5), systemd-journald.service(8), gdb(1)