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Awk - select from a list

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02-06-2008

simha77777 simha77777 is offline

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Join Date: Jul 2006

Posts: 8

Awk - select from a list

Hi all,

I am trying to select some columns from a file, based on the list of values.
Would like to know how best I can achive this.

If coulmn 1 has a value of 57 then print the ist column (This works)

Code:

awk -F'  ' '{if ( $1 == 57 ) {print $1}}' file.txt

Now my requirement is that I have to check the column with multiple values. (If I have 2 use an OR operator as below)

Code:

awk -F'  ' '{if ( $1 == 57 || $1 == 58) {print $1}}' file.txt

I have 100 values which I need to check with the first column. Is there a way to do this, without writing in 100 conditions in the if statement?
(I could put the 100 values into a file if that makes things easier)

Please let me know if you need more information. Any help greatly appreciated.

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