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ReadLines and Substraction

From: yetcom
Subject: ReadLines and Substraction
Date: Mon, 14 Mar 2011 03:47:04 -0700 (PDT)
User-agent: G2/1.0

Hello Everyone,

I have an issue regarding the bash. I have 2 different files and each
of them involves some float point numbers for each lines. I want to
subtract each line then put all the results into a file. The first
line float number will be subtract with the first line of other file
and the second with the other second... and etc...

When I read both files with:

cat ./Temp1.log | while read line; do

            cat ./Temp2.log | while read line; do

            #It reads the first line of temp1, I also need to read the
first line of temp2. However, Temp2 will be read until the end of file
so that I cannot read one by one for each lines of different files.



If you can help me with this, will be very happy for that. Thanks in


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