Splintercat writes: The Humble Indie Bundle V has just been released featuring Psychonauts, LIMBO, Amnesia: The Dark Descent, Superbrothers: Sword & Sworcery EP, and Bastion for Windows, OSX and Linux. Ubuntu software center support has also been added as a method of downloading.
egrep patterns are full regular expressions; it uses a fast deterministic
algorithm that sometimes needs exponential space.
-- unix manuals