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For Loop for a list of tab delimited variables

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http://www.unix.com – 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: 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 (HowTos)