No, it is. And as other people have pointed out, it ships on more distros. https://pubs.opengroup.org/onlinepubs/009604499/utilities/sed.html https://pubs.open

No, it is. And as other people have pointed out, it ships on more distros. https://pubs.opengroup.org/onlinepubs/009604499/utilities/sed.html https://pubs.opengroup.org/onlinepubs/009604499/utilities/se... It's "ed" which is de facto non-standard.