Version 0.3 of the Absinthe iPhone 4S and iPad 2 untethered jailbreak utility was released a moment ago by the Chronic Dev Team, and with it comes support for Linux.
If you're already jailbroken with v0.2, there is no need to attempt to reapply the jailbreak with the latest version, because there's nothing really new besides a few cosmetic changes and a fix for a rare bug that most won't encounter.