Practice using the alias command.

a$.$ Use the alias command to display the aliases $($nicknames$)$ that are defined for

your system, if there are any.

b$.$ Create an alias called $$lsall$$ which shows all files, both regular and hidden.

$($Hint: the ls command prints the regular files in the current directory. Use the

$--$help option to find which option can be added to show all of the files.$)$ What

is the command you ran to achieve this?