Linux Tip Of The Day - Adding Columns Quickly

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If you have a file with multiple columns

1 5
5 7
2 7
9 2

and you want to add up a specific column, the following command can be used:

$ awk -v col=2 ‘{ total += $col } END { print total }’ FILENAME

Where “col=2″ is the second column in the file.

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