[clug] Braindead shell?

[Antti.Roppola at brs.gov.au]

So I have a Perl script that works perfectly when run from my login, but it complains
bitterly when run in cron where it can't find stuff like FlexLM and Oracle.

Is there an easy means of (temporarily) nuking PATH, LD_LIBRARY_PATH, ORACLE_HOME
and all the other assumed variables within an xterm? That is, easier than writing another script
to un-set and re-set them?

Thanks,

Antti