MySQL :: MySQL 8.0 Reference Manual :: 4.6.5 myisamlog

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4.6.5 myisamlog — Display MyISAM Log File Contents

myisamlog processes the contents of a MyISAM log file. To create such a file, start the server with a --log-isam=log_file option.

Invoke myisamlog like this:

shell> myisamlog [options] [file_name [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 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.
-F filepath/
Specify the file path with a trailing slash.
-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.

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