[lacerus]

to_hex does not seem to be in the standard library, but these will work and are rather elegant to get a short random string. Thanks, Patrick!

  rand(16**16).to_s(16)
  rand(16**16).to_s(36)

[earless1]

http://www.ruby-doc.org/stdlib-1.9.3/libdoc/securerandom/rdo...