| EXIT 0 | GREP Performance monitoring | GREP CPU core id
-h | EXIT 0 | GREP Help message
-v | EXIT 0 | GREP likwid-features
-c | EXIT 1 | GREP option requires an argument
-s | EXIT 1 | GREP option requires an argument
-u | EXIT 1 | GREP option requires an argument
-c 0 | EXIT 0 | GREP Performance monitoring | GREP CPU core id
-s HW_PREFETCHER | EXIT 0 | GREP Performance monitoring | GREP CPU core id
-u HW_PREFETCHER | EXIT 0 | GREP Performance monitoring | GREP CPU core id
