MySQL 5.6 Reference Manual Including MySQL NDB Cluster 7.3-7.4 Reference Guide
This utility is deprecated in MySQL 5.6.17 and removed in MySQL 5.7
mysql_fix_extensions converts the extensions
for MyISAM (or ISAM) table
files to their canonical forms. 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 mysql_fix_extensions like this, where
data_dir is the path name to the
MySQL data directory.
shell> mysql_fix_extensions data_dir