Y'all know about ctrl-r to search history, right? I went for so many years without even thinking to look for something better than up-arrow, so I have to mention it.
It deletes all keystrokes that have been entered. So, if you know you made a typo when entering your password, you don't have to press backspace many times to make sure you have deleted all the characters before starting over but you can just press ctrl+u and start over.
Here's another mindfuck: gnu readline is so popular that developers of other software tend to implement its keybinds as hidden features/eastereggs. That's why ctrl+u works in GTK text input boxes as well!
Good tip!I didn't know about that. I just tried it out and it works pretty well but I worry how long it will take to break the habit of mashing the up arrow all the time since I've been doing it so long. This is clearly better though.