Another way to do it: 
#!/usr/bin/perl -sp
BEGIN {
        if ($h) {
                print <<"USAGE";
Usage: caesar: $0 -c filename
        rot13: $0 filename
USAGE
                exit;
        }
}
 
if( $c ) {
        tr/A-Za-z/D-ZA-Cd-za-c/;
} else {
        tr/A-Za-z/N-ZA-Mn-za-m/;
}

In reply to RE: Cheesy Encryption by Anonymous Monk
in thread Cheesy Encryption by ergowolf

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