MYISAMLOG(1)                                 MariaDB Database System                                MYISAMLOG(1)

NAME

       myisamlog - display MyISAM log file contents

SYNOPSIS

       myisamlog [options] [log_file [tbl_name] ...]

DESCRIPTION

       myisamlog processes the contents of a MyISAM log file.

       Invoke myisamlog like this:

           shell> myisamlog [options] [log_file [tbl_name] ...]
           shell> isamlog [options] [log_file [tbl_name] ...]

       The default operation is update (-u). If a recovery is done (-r), all writes and possibly updates and
       deletes are done and errors are only counted. The default log file name is myisam.log for myisamlog and
       isam.log for isamlog if no log_file argument is given. If tables are named on the command line, only
       those tables are updated.

       myisamlog supports the following options:

       •   -?, -I

           Display a help message and exit.

       •   -c N

           Execute only N commands.

       •   -f N

           Specify the maximum number of open files.

       •   -i

           Display extra information before exiting.

       •   -o offset

           Specify the starting offset.

       •   -p N

           Remove N components from path.

       •   -r

           Perform a recovery operation.

       •   -R record_pos_file record_pos

           Specify record position file and record position.

       •   -u

           Perform an update operation.

       •   -v

           Verbose mode. Print more output about what the program does. This option can be given multiple times
           to produce more and more output.

       •   -w write_file

           Specify the write file.

       •   -V

           Display version information.

COPYRIGHT

       Copyright 2007-2008 MySQL AB, 2008-2010 Sun Microsystems, Inc., 2010-2025 MariaDB Foundation

       This documentation is free software; you can redistribute it and/or modify it only under the terms of the
       GNU General Public License as published by the Free Software Foundation; version 2 of the License.

       This documentation is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
       even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
       Public License for more details.

       You should have received a copy of the GNU General Public License along with the program; if not, write
       to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA or see
       http://www.gnu.org/licenses/.

SEE ALSO

       For more information, please refer to the MariaDB Knowledge Base, available online at
       https://mariadb.com/kb/

AUTHOR

       MariaDB Foundation (http://www.mariadb.org/).

MariaDB 11.8                                      5 March 2025                                      MYISAMLOG(1)