Exercises O o o List some of builtin commands that cannot be displayed using which command. o List the files in the /bin directory and the /etc directory in long format Is there an existing alias for rm? Create two files: xl.doc and x2.txt, then using rm -i to remove xl.doc. Then, create the following alias: rr='rm -i'. Test your alias to remove the file x2.txt o Create an alias called RAM for listing the memory states on the machine. Make the desktop your working directory and create the following files (al,a2 bx, by, and c2) and two directories (dxl and dx2). Then, create an alias command in a single line to: print the path of the working directory, list all the files that ending with a number, and the date. o List all current aliases. Remove all the aliases you created. O O