A simple universally unique ID generation library.
UUIDTools was designed to be a simple library for generating any of the various types of UUIDs. It conforms to RFC 4122 whenever possible.
require "uuidtools"UUIDTools::UUID.md5_create(UUIDTools::UUID_DNS_NAMESPACE, "www.widgets.com")
=> #<0x287576 uuid:3d813cbb-47fb-32ba-91df-831e1593ac29>
UUIDTools::UUID.sha1_create(UUIDTools::UUID_DNS_NAMESPACE, "www.widgets.com")
=> #<0x2a0116 uuid:21f7f8de-8051-5b89-8680-0195ef798b6a>
UUIDTools::UUID.timestamp_create
=> #<0x2adfdc uuid:64a5189c-25b3-11da-a97b-00c04fd430c8>
UUIDTools::UUID.random_create
=> #<0x19013a uuid:984265dc-4200-4f02-ae70-fe4f48964159>
</0x19013a></0x2adfdc></0x2a0116></0x287576>
$ sudo gem install uuidtools