UPGRADE-SYSTEM(8)

UPGRADE-SYSTEM is configured to remove all Perl/Python/Ruby extensions and 
development libraries that are NOT listed as another package's dependency, 
which is a sensible default behavior for laymen's workstations.

Less drastic settings are possible by editing /etc/upgrade-system.conf(5).

-- Martin-Éric Racine <q-funk@iki.fi>  Tue, 20 Dec 2005 01:09:55 +0200
