MYISAMLOG(1)

✨ MYISAMLOG ✨

okay bestie so this is the myisamlog page from the MariaDB Database System manuals, and we're gonna read it together like it's a group chat, except it's actually a manual page and everything in it is real and true 💖

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🌸 NAME 🌸

myisamlog — display MyISAM log file contents

like. it shows you what's inside a MyISAM log file. that's the whole job. iconic behavior honestly 👑

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🎀 SYNOPSIS 🎀

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

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🦋 DESCRIPTION 🦋

myisamlog processes the contents of a MyISAM log file. that's the vibe. it reads it, it does stuff with it.

you invoke it like this, fr fr:

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

👀 yes, isamlog is right there too. two names, same energy.

so here's the tea about what actually happens by default. the default operation is update (-u). that's just what it does if you don't say otherwise. but if a recovery is done (-r), then all writes and possibly updates and deletes are done, and errors are only counted — they don't stop anything, they just get tallied up, no cap.

the default log file name is myisam.log for myisamlog, and isam.log for isamlog, in case you didn't hand it a log_file argument. and if you name tables on the command line? only those tables get updated. selective. we love that for us 💅

myisamlog supports the following options:

⭐ OPTIONS ⭐

• -?, -I — Display a help message and exit. short and sweet, a lil escape hatch 🫶
• -c N — Execute only N commands. a hard limit, bestie. know when to stop.
• -f N — Specify the maximum number of open files.
• -i — Display extra information before exiting. little parting gift on the way out 🎁
• -o offset — Specify the starting offset.
• -p N — Remove N components from path.
• -r — Perform a recovery operation. (this is the one where writes and possibly updates and deletes are done and errors are only counted — remember?)
• -R record_pos_file record_pos — Specify record position file and record position.
• -u — Perform an update operation. (the default one, hi 👋)
• -v — Verbose mode. Print more output about what the program does. This option can be given multiple times to produce more and more output. stack it like bracelets, the more the better ✨
• -w write_file — Specify the write file.
• -V — Display version information.

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💜 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/.

💀 that ALL-CAPS part is not me being dramatic, that's literally how it's written, and it means what it says: no warranty. take it seriously.

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🌈 SEE ALSO 🌈

For more information, please refer to the MariaDB Documentation, available online at https://mariadb.com/docs/

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👑 AUTHOR 👑

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

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and that's the whole page, bestie!! this was MariaDB 11.8, dated 5 March 2025, and it's the MYISAMLOG(1) manual page — thanks for reading all the way to the end, you're literally the main character 🧚💖