[vopi]

In what distros? Ubuntu comes with vim.

[pcmonk]

Yeah, but it's vim.tiny. They don't even alias it to `vim` because it's not full vim.

[cryptarch]

Debian Stable (without a DE) only comes with nano AFAIK.

[gh02t]

It has vi in the base system, specifically `vim-tiny`. Vi is mandated by POSIX, so pretty much every distro includes some minimal version of it in the base system. `nvi` is also used sometimes instead.

[jimktrains2]

I'd bet good money both ed and vi are there as they are specified by POSIX iirc.