Display unique values of a column

awk '{ a[$2]++ } END { for (b in a) { print b } }' file
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
Sample Output
a b c d
e f g h
c b d e
d w g h


By: giorger
2012-06-05 07:58:51

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What Others Think

awk can be so fast and so powerfull
cp · 476 weeks and 3 days ago
also for big data
cp · 476 weeks and 3 days ago
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