GMGruman writes: Egypt's cutoff of the Net enrages the Netizenry, who are finding a bunch of ways — high tech and low tech — to fight back, from dial-up to ham radio, from mesh networks to Twitter. Robert X. Cringely shows how the Net war is being waged, and asks could it happen at home, too?
egrep patterns are full regular expressions; it uses a fast deterministic
algorithm that sometimes needs exponential space.
-- unix manuals