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Display unique values of a column

Terminal - Display unique values of a column
awk '{ a[$2]++ } END { for (b in a) { print b } }' file
2012-06-05 07:58:51
User: giorger
Functions: awk
Display unique values of a column

Find the unique values of a column utilizing awk.

Credits goes to here (posted by "era"): http://www.unix.com/shell-programming-scripting/77138-awk-print-distinct-col-values.html


There are 4 alternatives - vote for the best!

Terminal - Alternatives
cut -d',' -f6 file.csv | sort | uniq
2013-04-10 14:05:32
User: richie
Functions: cut sort

the column number is '6'

cut -f 3 | uniq
2012-06-06 10:48:41
User: flxndn
Functions: cut

3 is the column's number.

Know a better way?

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What others think

awk can be so fast and so powerfull

Comment by cp 150 weeks and 1 day ago

also for big data

Comment by cp 150 weeks and 1 day ago

Your point of view

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