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