Created
December 15, 2016 19:57
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Random generators
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#!/usr/bin/env ruby | |
require 'securerandom' | |
print 'Enter desired length of random hex string: ' | |
length = gets | |
begin | |
actual_length = Integer(length) | |
byte_length = (actual_length / 2.0).ceil | |
raise unless byte_length > 0 | |
rescue | |
puts 'Invalid length.' | |
exit 1 | |
end | |
puts SecureRandom.hex(byte_length)[0, actual_length] |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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#!/usr/bin/env ruby | |
require 'securerandom' | |
print 'Enter desired number of digits: ' | |
digits = gets | |
begin | |
length = Integer(digits) | |
raise unless length > 0 | |
rescue | |
puts 'Invalid number of digits.' | |
exit 1 | |
end | |
puts format "%0#{length}d", SecureRandom.random_number(10**length) |
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