Generates a random string via the commande line

random_string.rb

#!/opt/local/bin/ruby

def random_string(length=15)
  chars = 'abcdefghjkmnpqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ23456789'
  password = ''
  length.times { password << chars[rand(chars.size)] }
  password
end
if ARGV.first
  puts random_string(ARGV.first.to_i)
else
  puts random_string
end