well you did mention that it would require codeing , and i think you allready have your soultion , but i figured i would toss this on here anyway as i use it all the time .. it's perl , just add/remove the # on the line you want the function for , inputfile is a.txt output is b.txt
$file = "a.txt";
$file2 = "b.txt";
open(IN, "<$file" ) || die "Cannot read file $file\n";
open(OUT, ">$file2") || die "Cannot read file $file2\n";
while (<IN>) {
tr/A-Z/a-z/; # convert to lower case
#tr/a-z/A-Z/; # convert to upper case
print OUT;
}
close IN;
close OUT;