SuperCharlie writes: Effective November 1st, 2012, PayPal is updating its user agreement requiring any disputes between you and PayPal to be settled by binding, "final" arbitration. According to user notifications, you have until December 1st, 2012 to opt out, however, no facilities or links to do so are provided.
egrep patterns are full regular expressions; it uses a fast deterministic
algorithm that sometimes needs exponential space.
-- unix manuals