$4.$ Display your terminal settings using a command. NOTE: You may have to use an option with the command to display all settings. From the output, using an echo command answer the question: $(1)$ what the key setting is to delete$/$discard entire command you have typed so far in the line; $(2)$ key setting for backspace. Your answer should have descriptive text like: echo $$Key setting to discard current command line is $...$