[MacPerl] Looping folders

[mark@cheers.jsc.nasa.gov (Mark Manning/Muniz Eng.)]

I ran across something the other day which I was wondering
if anyone else had run across.  I was helping someone do
some MacPerl coding and we were recursing through
directories.  The program ran out of memory because it
turned out they had aliased a folder (somehow) to point
back at the top level directory.  I corrected this by just
always comparing the new folder against a list of folders
already gone through.  Is there a better way to do this?

(ie: Does File::Find know about this possible problem?  Or
would it go into an infinite loop too?)

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