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.

(╯°□°）╯︵ ┻━┻

Switch your calculator with a computer. Try again.