jfruh writes "Dan Tynan is a tech writer and blogger who discovered, while trying to post links to his writing on his Google+ profile, that his account had been suspended. This despite the fact that he used his real name and didn't violate the terms of service in any other way. Upon appeal his account was reinstated, just as mysteriously as it was shut down, but along the way he discovered a rash of people with suspended Google+ accounts who can't figure out what they did to anger the Google gods."
egrep patterns are full regular expressions; it uses a fast deterministic
algorithm that sometimes needs exponential space.
-- unix manuals