procmail
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2003-12-14 15:38:20
All,

# Check against personal whitelists
FROM=`formail -XFrom: | formail -r -xTo: | tr -d ' '`
:0
* ? grep -F -i -x -q "$FROM" $HOME/.whitelist
SWITCHRC=$HOME/.procmailrc

I can't find an example in the man page or google of what the question
mark does in the above recipe. I understand what the entire thing does,
I just don't get how the question mark makes it work?

-- 
Nick (Nix) Gray
Senior Systems Engineer
Bruzenak Inc.
(512) 331-7998

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