Ed is the standard text editor.
And not installed by default in many distros. FML.
> And not installed by default in many distros. FML.
ed (pronounced as distinct letters, /ˌiːˈdiː/)[1] is a line editor for Unix and Unix-like operating systems. It was one of the first parts of the Unix operating system that was developed, in August 1969.[2] It remains part of the POSIX and Open Group standards for Unix-based operating systems
so it is a bug in those distros.
Doing edlin as high-school typing exam was already enough, and ed wasn't much better, which was an opinion shared by our customers back then.
For those who missed it: https://www.gnu.org/fun/jokes/ed-msg.en.html
Many folks nowadays don't get how lucky they are, not having to do UNIX development on a time-sharing system, although cloud systems kind of replicate the experience.