Operate on two files at the same time in awk

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From: Vilok Kusumakar
Date: Thu, 30 Sep 1993 17:19

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I have a problem for awk experts:

I have two text files file1 and file2.

I want to look for presence of string at $1(1st column) in file1 in 
file2. And print out all the lines in file1 whose $1 is not present 
in any line in file2.

--
Vilok Kusumakar                    OSI Protocols for tomorrow......
vilok@bnr.ca                       Bell-Northern Research, Ltd.
Phone: (613) 763-2273              P.O. Box 3511, Station C 
Fax:   (613) 765-4777              Ottawa, Ontario, K1Y 4H7

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From: vilok@bmerh322.bnr.ca (Vilok Kusumakar)
Subject: Operate on two files at the same time in awk
Message-ID: <1993Sep30.171928.6462@bmerh85.bnr.ca>
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Date: Thu, 30 Sep 93 17:19:28 GMT
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