Balaji Ramasubramanian


    Opt - Get command line options and their values


    This module allows you to read command-line options and their values.

    This module can handle any command-line interface.


    use Opt;
    use strict;

    my ($error, $opt1, $opt2, $opt3, @info) = &Opt::GetOpt("-opt1:b, -opt2:s=string2, -opt3:s", "req 1, xor 2 3", @ARGV);
    if ($error) {
        print "Errors detected in specifying options.\nUsage:<usage string>";
    } else {
        ### Rest of the code
        if ($opt1) {
            if ($info[1]==1) {
                ### If the value is a default value
                print "Default value for opt2 is taken\n";
            } elsif ($info[1]==3) {
                ### If the value is not default
                print "Non-default value as given = $opt2";


    The module can be installed using the standard Perl procedure:

        perl Makefile.PL
        make test       # No tests defined in the version 0.1.1
        make install    # You may need to be root
        make clean      # or make realclean

    Windows users without a working "make" can get nmake from:


    The Synopsis above gives an example of how to use the perl module and the function GetOpt.
    In addition, extensive documentation is provided in the perl module itself. 
    The perl module can be usually found in the path /usr/lib/perl/5.8/ or /usr/lib/perl/5.8.8/ etc.


    This is the 0.1.1 version distribution of the module


    Balaji Ramasubramanian (


    Of course, I'll welcome e-mails.
    And now, I have a website. If you have a question or suggestion, 
    please let me know.