I'm with isotope. I find that command line parms with longer names are easier to remember. I generally use Getopt::Long something like this:

GetOptions("file=s"  => \my $input_file,
           "verbose" => \$VERBOSE,
           "help"    => \my $HELP)
  or die "Insert usage message here";
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Getopt::Long is also flexible enough to allow bundling of single-character options like Getopt::Std.

- robsv