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UGU: Unix Guru Universe - Unix Tip #4167- July 9, 2012 - Home : Help : Today's Tip
Unix Tip #4167- July 9, 2012

RANDOM LINES FROM A FILE


A easy way to retrieve random lines from a text file:

perl -e '$count = 10; @line = <>; for (1..$count) { print $line[int rand @line] }'

example:
% cat /etc/passwd | perl -e '$count = 10; @line = <>; for (1..$count) { print $line[int rand @line] }'

This tip generously supported by: abend@110.net



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
4166 - EXTRACT THAT LAST FIELD
4165 - FULL OF FILESYSTEM INODES
4164 - FORGET THE CRONTAB MAN
4163 - POWER OF BACKQUOTES
4162 - PING THE HOST TABLE


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