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reading a file line by line

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From:
Jon Serra
Date:
February 27, 2002 12:01
Subject:
reading a file line by line
Message ID:
20020227200147.36866.qmail@onion.perl.org
Greetings,  I am trying to read a text file into a scalar variable line by line 
until EOF or a search test if fullfilled.  I have been reading files in like 
this:

chomp (@line = `cat filename`);

I do not want to do this beacuse my file is quite large, and there is no reason 
to hog the memory for the little bit I actually want, and second, I do not want 
to make a system call to the unix cat command.  TIA Jon

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