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Replace part of a line with sed/awk

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# 1  
Old 11-21-2008
Replace part of a line with sed/awk
Hello

I have a document and in this document I have several occurrence of "VAR == xxxxxxx" and xxxxx can be anything. I don't know what it is. I want to replace the 'xxxxx's with something I know.

What I know however, is the line numbers of the VAR =='s in the file.

How can I replace the xxxx's with awk or sed? Can someone please help me out here?

Thanks
Ali
# 2  
Old 11-21-2008
re: Replace part of a line with sed/awk
i tried to simulate your scenario.. so created an input file as below by the name inputfile.txt
-------------
var1=shishir
var2=shishir
var1=shishir
var2=shishir
var3=shishir
------------
the sed script to replace the "shishir" with "srivastava" in "var1=shishir" at line#3 is as follows

sed '3 s/var1=[a-z][a-z]*/var1=srivastava/'

and the output is as follows:
-------------
var1=shishir
var2=shishir
var1=srivastava
var2=shishir
var3=shishir
------------


I think this is what you were looking at..

thnx
Shishir srivastava
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