Robert P. J. Day wrote: > this should be an easy one: on my current (etch) system, there are > a number of packages that have more than one version installed. for > example (and from memory), there are at least three versions of gcc > installed. am i safe to remove/purge the older ones? > > perhaps a better question is, what is the command to list the > packages that depend on a certain package? in fedora, i'm used to > running: > > $ rpm -q --whatrequires <package> >
aptitude comes in handy here: aptitude search '~i~D^<package>$' Since aptitude uses regular expressions search <package> is enclosed by ^ and $ to distinguish, e.g., between gcc-4.3 and gcc-4.3-doc. Also interesting may be aptitude search '~i!~M(~R~i|~Rrecommends:~i)' It will show any installed packages that aren't auto which are dependencies or recommendations of other packages. In short, packages that aren't marked auto but could (should?) be. Be aware though that circular depends/recommends prevents all packages in that list to be marked auto. -- Regards, Jörg-Volker. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
