Have you ever wished for your installation shell scripts to run
reproducably, without much programming fuzz, and even with optional logging
enabled? Then give up shell programming, use Perl.

"Sysadm::Install" executes shell-like commands performing typical
installation tasks: Copying files, extracting tarballs, calling "make".
It has a "fail once and die" policy, meticulously checking the result of
every operation and calling "die()" immeditatly if anything fails.