Or, just type the command “history”, find the index number of the desired command, then type “! <index number>”, then <enter>.

I use a 50/50 mix of isopropyl alcohol and white vinegar. I drip about ten drops in one ear, let it sit there while I read a book on my side. Then I catch it all with a Kleenex tissue as I rotate my head.

This works great on ear infections too.