> You can check for an interactive shell by testing the prompt. Something
> like this will work:

I think a better way to test for an interactive shell is to check it
directly:

case $- in
    *i*) echo "this is an interactive shell"
esac

	Mark
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Email: Mark_Weaver@brown.edu           | Brown University
PGP Key: finger mhw@cs.brown.edu       | Dept of Computer Science