What do you consider a "proper keyboard ui"? A shell with the full discoverability of a blinking cursor?

That works for most programs, sure.

Just an hour ago I got reminded how user-unfriendly some terminal utilities are.

    # ln
    ln: missing file operand
    Try 'ln --help' for more information.

Yeah what a helpful error message. Yes I know it takes two file paths to link one to the other. But for the life of me I can't remember which order it wants them in.

I wish there was some sort of "parameter hint" for the terminal, like in an IDE. You type `ln` or `find` or `grep` and it pops up above the cursor and tells you what parameters the command expects.

Usually I'd rather not muddle my way through ln, since it can make a mess of things.

grep... I dunno, I guess I use it enough to be used to it.

find is kind of a pain, I can never remember if the path goes first or second. Honestly I just do something like

locate <thing> | grep <path where I expect it to be>

Powershell has much better discoverability.

Just type a "-" for a flag, trigger autocomplete and you get a list of options with descriptive names

TUI applied to GUIs.