$1.$ Execute the command that displays what directory you are in$.$

$2.$ Execute the ls command with the short option to show files in long format in your home directory.

$3.$ Execute the ls command with the short option to show all files.

$4.$ Use the ls command to create a listing of files in reverse order.

$5.$ Execute the ls command with all of last three options combined.

$6.$ Use an option with the ls command to change the width of the screen to $30$ columns.

$7.$ Execute the ls command using two options on the same line: a short option to show files in long format and

a long option to show all files.

$8.$ Execute the ls command with a long option to display files without having the names color$-$coded by file

type.

$9.$ Use tab completion by first typing just the letter e with tab completion in a way to show all commands

starting with the letter e$,$ and then the letters ec with tab completion.