This is Perl module IO::Prompt::Simple. INSTALLATION IO::Prompt::Simple installation is straightforward. If your CPAN shell is set up, you should just be able to do % cpan IO::Prompt::Simple or % cpanm IO::Prompt::Simple Download it, unpack it, then build it as per the usual: % perl Makefile.PL % make && make test Then install it: % make install DOCUMENTATION IO::Prompt::Simple documentation is available as in POD. So you can do: % perldoc IO::Prompt::Simple to read the documentation online with your favorite pager. xaicron