Changes

An '''alias''' is a '''nickname''' to an existing command or group of commands.<br><br>An alias existing in '''system memory ''' and will be '''lost ''' when your current Linux session ends, <br>unless the alias is set in a '''start-up file ''' (e.g. <span style="font-family:courier;font-weight:bold;">~/.bashrc</span>. You will learn about using start-up files <u>later </u> in this course.<br><br>