perl -MExtUtils::Installed -le 'print for ExtUtils::Installed->new->modules'
sudo perl -MCPAN -e shell
cpan> install YAML
cpan> install Bundle::CPAN cpan> reload cpan cpan> exit
install {저자}/{모듈명}-{version}.tar.gz 예) install YANICK/Parallel-ForkManager-1.18.tar.gz
cpan Bundle::CPAN
cpan Test::More