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Shell Programming and Scripting

Looping for comparison

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# 1  
Old 02-08-2013
Looping for comparison
Hi friends,,,

for comparison purpose i need to use nested loop....pls give one example..as I have confusion while file reading..my code looks somewhat like this..


Code:


Code:



awk 'FNR==NR{
    { getline < "file.dat" ; la=$1 }
    { getline < "file.dat" ; lo=$2 }
    { getline < "file.dat" ; p=$2+0.1 }
    { getline < "ifile.dat" ; m=$2-0.1 } So then here...I want read 1st and 2nd field of 2nd file...
like this...
     {getline < "file2.dat"}; c=$1
     {getline < "file2.dat"}; cd=$2
 if(c >=m && cd <=a) then next if statement is true some operation else read next 1st and 2nd field of 1st file...once file1 comparison gets over (EOF)
print some result and read next fields of 2nd file






if anyone can explain it will be helpful..

Last edited by Akshay Hegde; 02-08-2013 at 02:48 AM..
# 2  
Old 02-18-2013
Not the usual way to use awk! Think flow.
# 3  
Old 02-18-2013
I'd be more tempted to either:

read file.dat and ifile.dat into arrays and then process file2.dat using the array values.

or

read all three files into arrays and process everything in the END block
# 4  
Old 02-18-2013
Yes, hard to predict the long dimension and process that serially.
# 5  
Old 02-19-2013
As is said again and again in these fora, post input and desired output, and your approach to the solution and/or the logics that connect both.
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