mariadb-fix-extensions

mariadb-fix-extensions converts the extensions for MyISAM (or ISAM) table files to their canonical forms.

Prior to MariaDB 10.5, the client was called mysql_fix_extensions. It can still be accessed under this name, via a symlink in Linux, or an alternate binary in Windows.

It looks for files with extensions matching any lettercase variant of .frm, .myd, .myi, .isd, and .ism and renames them to have extensions of .frm, .MYD, .MYI, .ISD, and .ISM, respectively. This can be useful after transferring the files from a system with case-insensitive file names (such as Windows) to a system with case-sensitive file names.

Invoke mariadb-fix-extensions as follows, where data_dir is the path name to the MariaDB data directory.

mariadb-fix-extensions data_dir