echo
and alias
are both shell commands. If the shell is running (which it obviously still is), those commands should still work, as it does not involve reading data from disk, but from memory.
Edit: I just noticed the picture said cd
was not found, which is also a shell built-in. So, I don’t know.
The hover-over text says “Disclaimer: I have not actually tried the beta yet. I hear it’s quite pleasant and hardly Hitler-y at all.”