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UGU: Unix Guru Universe - Unix Tip #4294- December 13, 2012
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Unix Tip #4294- December 13, 2012
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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