getting rid of dependencies under debian

[Gregory Nowak]

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Hi all.

Can someone please tell me if it is possible to get rid of unneeded
dependencies in debian? For example, say I install package x, which
depends on package y, and let's say that package y depends on package
z. 

If I later remove package x, packages y and z are still on the system,
although nothing else depends on them. So, is there a way to either
tell apt-get to remove packages y and z if x was removed, and nothing
else needs y and z, or to have apt-get scan for unneeded packages and
remove them?

Thanks in advance.

Greg


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