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# 1  
Question For Loop for a list of tab delimited variables

Hello,

I need to run a command for a set of input variables that are present in a tab delimited file, a sample of which is shown below:
Code:
1    3749
1    4129
1    5980
2    6201
2    9925
2    6894
3    1338
3    6477
3    6242
3    3632


Every row represents the two input values that my command will take and give results. How can I do this with a 'for' loop?

Thanks,
Guss

Last edited by Scott; 10-10-2010 at 06:10 AM.. Reason: Use code tags to preserve formatting
# 2  
This is much better done in a 'while' than 'for' loop.

The read builtin by default breaks on all whitespace, tabs included. To break on only tabs, set the IFS variable to a tab.
Code:
while read A B
do
        command $A $B
done < inputfile

This User Gave Thanks to Corona688 For This Post:
# 3  
Thanks Corona688!

~Guss
 

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