Unix Tip #4294- December 13, 2012


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ADDING COLUMNS QUICKLY


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.

NOTE: All tips provided are USE AT YOUR OWN RISK. Tips are submitted by various unix admins around the globe. UGU suggest you read and test each tip in a non-volitile environment before placing into production.


LAST 5 TIPS
4293 - CHMOD FILES NOT DIRS
4292 - FIND/REPLACE RECURSIVELY
4291 - TAIL WITH COLOR
4290 - MERGING TWO FILES
4289 - BACKING UP PASSWORDS


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