mysql_fix_extensions.sh tool copied from 4.0 tree (referenced in manual).

#!@PERL@

# This is a utility for MySQL. It is not needed by any standard part

# of MySQL.

# Usage: mysql_fix_extentions datadir

# does not work with RAID, with InnoDB or BDB tables

# makes .frm lowercase and .MYI/MYD/ISM/ISD uppercase

# useful when datafiles are copied from windows

die "Usage: $0 datadir\n" unless -d $ARGV[0];

for $a (<$ARGV[0]/*/*.*>) { $_=$a;

  s/\.frm$/.frm/i;

  s/\.(is[md]|my[id])$/\U$&/i;

  rename ($a, $_) || warn "Cannot rename $a => $_ : $!";

}