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Random numbers with Ruby

Terminal - Random numbers with Ruby
ruby -e "puts (1..20).map {rand(10 ** 10).to_s.rjust(10,'0')}"
2009-05-27 19:52:53
User: sil
3
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Random numbers with Ruby

There's been a few times I've needed to create random numbers. Although I've done so in PERL, I've found Ruby is actually faster. This script generates 20 random "10" digit number NOT A RANDOM NUMBER. Replace 20 (1..20) with the amount of random numbers you need generated

Show sample output | Add to favourites | Report as malicious

Alternatives

There are 3 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

Even faster

echo $RANDOM
Comment by rhythmx 300 weeks and 3 days ago

Apparently you need to learn to read. This generates a random 10 digit character not a random number

Comment by sil 300 weeks and 3 days ago
cat /dev/urandom | hexdump -d | awk '{ print $2$3}' | head -n20

the ruby is still faster ... cheers for choosing ruby

Comment by copremesis 300 weeks and 2 days ago

Your point of view

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