/usr/bin/myisampack from 11.4.13-MariaDB, client 1.23 for Linux (x86_64)
Copyright 2002-2008 MySQL AB, 2008 Sun Microsystems, Inc.
This software comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to modify and redistribute it under the GPL license

Pack a MyISAM-table to take much less space.
Keys are not updated, you must run myisamchk -rq on the index (.MYI) file
afterwards to update the keys.
You should give the .MYI file as the filename argument.

Usage: /usr/bin/myisampack [OPTIONS] filename...
  -b, --backup        Make a backup of the table as table_name.OLD.
  --character-sets-dir=name
                      Directory where character sets are.
  -#, --debug[=name]  Output debug log. Often this is 'd:t:o,filename'.
  -f, --force         Force packing of table even if it gets bigger or if
                      tempfile exists.
  -j, --join=name     Join all given tables into 'new_table_name'. All tables
                      MUST have identical layouts.
  -?, --help          Display this help and exit.
  -s, --silent        Be more silent.
  -T, --tmpdir=name   Use temporary directory to store temporary table.
  -t, --test          Don't pack table, only test packing it.
  -v, --verbose       Write info about progress and packing result. Use many -v
                      for more verbosity!
  -V, --version       Output version information and exit.
  -w, --wait          Wait and retry if table is in use.

Default options are read from the following files in the given order:
/etc/my.cnf /etc/mysql/my.cnf ~/.my.cnf
The following groups are read: myisampack
The following options may be given as the first argument:
--print-defaults          Print the program argument list and exit.
--no-defaults             Don't read default options from any option file.
The following specify which files/extra groups are read (specified before remaining options):
--defaults-file=#         Only read default options from the given file #.
--defaults-extra-file=#   Read this file after the global files are read.
--defaults-group-suffix=# Additionally read default groups with # appended as a suffix.

Variables (--variable-name=value)
and boolean options {FALSE|TRUE}  Value (after reading options)
--------------------------------- ----------------------------------------
backup                            FALSE
character-sets-dir                (No default value)
join                              (No default value)
wait                              FALSE