CPAN::Mini
% minicpan -r ftp://ftp.dti.ad.jp/pub/lang/CPAN/ -l ~/minicpan
半日くらいかかった...
% sudo /usr/bin/cpan cpan> o conf prerequisites_policy follow cpan> o conf urllist unshift file:///Users/oppara/minicpan cpan> o conf cpan> o conf commit cpan> q
crontab
0 3 * * * minicpan -q -r ftp://ftp.dti.ad.jp/pub/lang/CPAN/ -l ~/minicpan