grep is standardized. http://pubs.opengroup.org/onlinepubs/9699919799/utilities/grep.html http://pubs.opengroup.org/onlinepubs/9699919799/utilities/gr... Usin

grep is standardized. http://pubs.opengroup.org/onlinepubs/9699919799/utilities/grep.html http://pubs.opengroup.org/onlinepubs/9699919799/utilities/gr... Using ag et al in a script makes your script non-portable, which is the opposite of the goal here.