Randomize lines in a file

awk 'BEGIN{srand()}{print rand(),$0}' SOMEFILE | sort -n | cut -d ' ' -f2-
This appends a random number as a first filed of all lines in SOMEFILE then sorts by the first column and finally cuts of the random numbers.

4
By: axelabs
2009-05-29 01:20:50

3 Alternatives + Submit Alt

What Others Think

Interesting bit of fu but sort -R is much quicker.
TheMightyBuzzard · 472 weeks and 5 days ago
shuf
talkiwalki · 472 weeks and 5 days ago
Sort had no -r flag on the solaris box I was on and I've previously not heard of 'shuf'.
axelabs · 471 weeks and 3 days ago
rl is probably the shorter way
Josay · 470 weeks and 6 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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