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MYSQL_FIX_EXTENSI(1)         MySQL Database System        MYSQL_FIX_EXTENSI(1)

       mysql_fix_extensions - normalize table file name extensions

       mysql_fix_extensions data_dir

           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

       Copyright (C) 1997, 2016, Oracle and/or its affiliates. All rights reserved.

       This documentation is free software; you can redistribute it and/or modify it only under the terms of the GNU
       General Public License as published by the Free Software Foundation; version 2 of the License.

       This documentation is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
       the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
       for more details.

       You should have received a copy of the GNU General Public License along with the program; if not, write to the
       Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see

       For more information, please refer to the MySQL Reference Manual, which may already be installed locally and
       which is also available online at

       Oracle Corporation (

MySQL 5.6                         07/08/2016              MYSQL_FIX_EXTENSI(1)