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From: gaspar@inf.ethz.ch (Scott "gaspo" Gasparian)
Newsgroups: comp.unix.shell
Subject: using /bin/sh vars in awk
Summary: once agiain, need to put sh vars in awk
Message-ID: <27814@neptune.inf.ethz.ch>
Date: 2 Apr 91 12:14:26 GMT
Article-I.D.: neptune.27814
Sender: news@neptune.inf.ethz.ch
Reply-To: gaspar@inf.ethz.ch (Scott "gaspo" Gasparian)
Distribution: comp.unix.shell
Organization: Twilight-Zone-Algorithms-Incorporated
Lines: 36

ok, I know this came up awhile ago, and I dont want to bring it
up again.  However, not enuf disk to keep articles around, and
I forgot the answer:

Question: what syntax do I have to use to get awk to take /bin/sh
          variables in a shell script?

Example:  given a /bin/sh script, and an awk command in it somewheres,
          and i need to pass the var ${fred} to awk, what should
          the following line look like?

          fred="barney"
          wilma=`cat ${file1} | awk '{if($1== fred ){print("match")}}'
                                              ^^^^
             what I need is how to expand fred_|  to get awk to 
          replace it with the string "barney"

Since this already came up, just email me the answer.  I've already
tried ${fred}, $fred, "${fred}" and a couple other combos.

thanks

--gaspo.

BTW, the example is just that, I don't need a different way to solve
the example.  just get the vars to awk.


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