inode_buddha writes: "Not long ago we ran a story about how a NY newspaper published lists of gun owners. Now, it seems the same newspaper has hired armed guards in response to unspecified threats to the editor, amid "large volumes of negative response". Funny, I thought these people had some problem with gun ownership?"
egrep patterns are full regular expressions; it uses a fast deterministic
algorithm that sometimes needs exponential space.
-- unix manuals