NAME
    isamchk
 - Description, check and repair of ISAM tables. Used without options
    all tables on the command will be checked for errors

USAGE
    isamchk [OPTIONS] tables[.ISM]

SYNOPSIS
    isamchk [-a|--analyze] [-#|--debug=...]  [--character-sets-dir=...]
    [-C|--default-character-set=...]     [-d|--description]
    [-e|--extend-check]  [-f|--force]  [-?|--help]  [-i|--information]
    [-k|--keys-used=#]  [-l|--no-symlinks]  [-q|--quick] [-r|--recover]
    [-o|--safe-recover]  [-O|--set-variable  var=option]  [-s|--silent]
    [-S|--sort-index] [-R|--sort-records=#]  [-u|--unpack] [-v|--verbose]
    [-V|--version] [-w|--wait]

DESCRIPTION
    -a|--analyze
    Analyze distribution of keys. Will make some joins in  MySQL
    faster.

    -#|--debug=...
    Output debug log. Often this is 'd:t:o ,filename`

    --character-sets-dir=...
    Directory where character sets are

    -C|--default-character-set=...
    Set the default character set

    -d|--description
    Prints some information about table.

    -e|--extend-check
    Check the table  VERY thoroughly.  One need use this only in
    extreme cases as isamchk should normally find all errors even
    without this switch

    -f|--force
    Overwrite  old temporary  files.  If one uses -f when checking
    tables (running isamchk without -r), isamchk will  automatically
    restart with -r on any wrong table.

    -?|--help
    Display help and exit.

    -i|--information
    Print statistics information about the table

    -k|--keys-used=#
    Used with '-r'. Tell ISAM to update only the first # keys. This
    can be used to get faster inserts!

    -l|--no-symlinks
    Do not follow symbolic links when  repairing. Normally isamchk
    repairs the table a symlink points at.

    -q|--quick
    Used with -r to get a faster repair. (The data file isn't
    touched.) One can give a second '-q' to force isamchk to modify
    the original datafile.

    -r|--recover
    Can fix almost anything except unique keys that aren't unique.

    -o|--safe-recover
    Uses old recovery method; slower than '-r' but can handle a cou-
    ple of cases that '-r' cannot handle.

    -O| --set-variable var=option
    Change the value of a variable.

    -s|--silent
    Only print errors. One can use two -s to make  isamchk very
    silent

    -S|--sort-index
    Sort index blocks. This speeds up 'read-next' in applications

    -R|--sort-records=#
    Sort records according to an index. This makes your data much
    more localized and may speed up things (It may be VERY slow to
    do a sort the first time!)

    -u|--unpack
    Unpack file packed with pack_isam.

    -v|--verbose
    Print more information.  This can be used with -d and -e. Use
    many -v for more verbosity!

    -V|--version
    Print version and exit.

    -w|--wait
    Wait if table is locked.

SEE ALSO
    isamchk (1), isamlog (1), mysqlaccess (1), mysqladmin (1), mysqlbug
    (1), mysqld (1), mysqldump (1), mysqlshow (1), msql2mysql (1), perror
    (1), replace (1), safe_mysqld (1), which1 (1), zap (1),

AUTHOR
    Ver 1.0, distribution 3.23.29a Michael (Monty) Widenius (monty@tcx.se),
    TCX Datakonsult  AB (http://www.tcx.se). This software comes with no
    warranty. Manual page by L. (Kill-9) Pedersen (kill-9@kill-9.dk), Mer-
    curmedia  Data Model Architect / system developer (http://www.mercurme-
    dia.com)