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