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Unixx shel script - combing information from 2 files into one useing looping structur

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Join Date: May 2007

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cyberman111 cyberman111 is offline

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Re: Unixx shel script - combing information from 2 files into one useing looping structur

#11

Apr 10th, 2008

can u explain this code please.

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Join Date: Oct 2007

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eggi

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Re: Unixx shel script - combing information from 2 files into one useing looping structur

#12

Apr 10th, 2008

 Help with Code Tags 
 Shell Scripting Syntax (Toggle Plain Text) 
while read -r name number
do
     while read -r NAME NUM
     do
         if NAME is equal name
         then
              echo name NUM number         
     done < "file2"
done < "file1"
while read -r name number
do
     while read -r NAME NUM
     do
         if NAME is equal name
         then
              echo name NUM number         
     done < "file2"
done < "file1"

Basically, this pseudo code is reading the first file and grabbing the two variables, and for each line read from the first file, it's checking every line in the second file and, if the name matches, it's print the output in the format you specified to stdout.

If you need Monday to equal Mon, etc, you can do that pretty easily with sed or even cut, if you know you only need a certain number of characters in your abbreviation (like if your standard is always 3 - Monday = Mon, Tuesday = Tue, etc)

Hope that helps. Give it a shot and see what you can do with it. Remember, the code posted is pseudo-code which means it's not entirely "correct" (won't just work if you cut-and-paste it) and is meant to demonstrate a principal and provide a means to reaching the answer rather than being the answer itself.

Best wishes,

, Mike

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Join Date: Oct 2007

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eggi

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Re: Unixx shel script - combing information from 2 files into one useing looping structur

#13

Apr 10th, 2008

BTW,

Just a friendly tip. You might want to kill the other 3 or 4 identical posts you have in this forum or an admin might delete them all.

Just trying to help out so you don't get bumped off. Hope you get your problem solved soon

, Mike

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Join Date: Jan 2008

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Re: Unixx shel script - combing information from 2 files into one useing looping structur

#14

Apr 12th, 2008

I wished I had seen this post earlier. Cause I had the same home work in my unix class.

It took me a good while, but I got it working with the for loop.

Anywho, happy scripting!...