* The <span style="color:blue;font-weight:bold">ls </span> command displays a listing of filenames in the current directory* The <span style="color:blue;font-weight:bold">ls /bin </span> command displays a listing of filenames in the /bin directory (as opposed to your current directory)* The <span style="color:blue;font-weight:bold">ls -l </span> command displays a detailed listing of filenames in the current directory* The <span style="color:blue;font-weight:bold">ls -l /bin </span> command displays a details listing of files in the /bin directory