The cameras capture the young man walking down the stairs, reciting a monologue about the three things people should know about him: His favorite movie is "Gone with the Wind," he loves roller coasters and he hates when people don't take him seriously.
The shot is complicated and takes several attempts to perfect. But there's no big camera equipment, no expert sound system and no reels of film to capture the moment.
egrep patterns are full regular expressions; it uses a fast deterministic algorithm that sometimes needs exponential space. -- unix manuals