Not when the command in question has been a standard part of all Unix shell environments since 1977, no. Is that a serious question? https://medium.com/@rualt

Not when the command in question has been a standard part of all Unix shell environments since 1977, no. Is that a serious question? https://medium.com/@rualthanzauva/grep-was-a-private-command-of-mine-for-quite-a-while-before-i-made-it-public-ken-thompson-a40e24a5ef48 https://medium.com/@rualthanzauva/grep-was-a-private-command... What actually happened here is that POSIX skipped it. It never entered a standard, even though it was (literally!) in every OS and available to everyone. But no one cared that it wasn't in some arbitrary standard, because it was always there. For half a century! I dare say that "fgrep" and "egrep" have more active users (both interactive and scripted) than "awk" or "ed" or "od" or "bc", all of which are still around.