from the we-only-track-all-your-movements dept.
NF6X writes "CBS station KPIX reports that somebody has been installing counterfeit traffic signs on California bay area freeways, warning motorists of drone-based speed enforcement. They are professionally-made reflective metal signs of comparable style and quality to official traffic signs, and in some cases are even mounted with tamper-resistant hardware. The signs show the familiar silhouette of an MQ-1 Predator drone launching a weapon. According to KPIX, California Highway Patrol denies that they operate any drones, and states that the signs are fake."
egrep patterns are full regular expressions; it uses a fast deterministic
algorithm that sometimes needs exponential space.
-- unix manuals