Using tr to convert all file names passed in to uppercase : Special Variables « Language Basics « Perl

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Perl » Language Basics » Special Variables

Using tr to convert all file names passed in to uppercase


   

#!/usr/bin/perl -w



foreach $filename (@ARGV) {

    $newname = $filename;

    $newname =~ tr/a-z/A-Z/;

    if ($newname ne $filename) {

        if ( -e $newname ) {

          print "ERROR: Won't clobber existing $newname.\n";

        } else {

            print "Renaming $filename to $newname.\n";

            rename($filename, $newname) or die "Cannot rename $filename to $newname due to $!";

        }

    }

}

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