The standard text editor.
ed is the standard text editor. Who needs all the advanced
features of vi or vim (or even neovim). ed has all you need!
ed is a line based text editor. There is no "visual" mode. You edit with the all powerful regex! Who cares about seeing what they type?
To begin, open a unix shell and type ed. It is a pretty simple
interface (good luck quitting). To start, you should probably enter prompt
mode by entering
$ ed P *
The * is the ed prompt. This is where you type all your commands.
Start with a
$ ed P * a Type some text \.
The . on a single line lets you exit the "append" mode. This
mode allows you to add text to a file. Once you're out of this mode you
you should print the buffer with ,p (, means the whole buffer)
Read the info page and you should be all set. A lot of the commands aren't too different from vim, which is nice. And if you learn how to edit with regex, you'll be editing like an LLM, so that's cool I guess.
Oh also if you want to quit, use Ctrl+D :).