You need several CPAN modules to use these scripts. If you use Debian GNU/Linux, you can install them like so: sudo aptitude install -R libdatetime-perl \ libdigest-perl libemail-valid-perl libfile-slurp-perl \ libmail-gnupg-perl libgnupg-interface-perl libio-prompter-perl \ libmime-base64-perl libmime-tools-perl libnet-ldap-perl \ libstring-mkpasswd-perl libtemplate-perl libyaml-syck-perl \ libclass-method-modifiers-perl perl-doc This will most probably work for Ubuntu as well. Note: As of 2012-05-06, `libio-prompter-perl' is only available in the `testing' and `unstable' Debian distributions. Another way to install the depency is to run `cpan -i IO::Prompter' in a shell.