my favorite way to clean out /usr/lib:

find, with appropriate args such that it notes files which have not
been accessed lately.

mail the output to root (i.e. from a script) say, weekly.

clean them out by hand...

in general, if you've got versions 1.0 and 1.1 of a shilb,
1.0 is removable.  if you've got 1.0, 1.1, and 2.0, only 1.0 is removable,
as long as some programs are still linked against 1.*


chris

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