title: The "mkdir" command in PowerShell
body: <p>I'm working on "The Command Line Crash Course", and when I try to run "mkdir temp" in PowerShell (Windows) I get something like "Access to the path is denied", and according to the book <a href="http://cli.learncodethehardway.org/book/ex4.html" rel="nofollow noreferrer">http://cli.learncodethehardway.org/book/ex4.html</a> I'm supposed to get something really different. Any ideas?</p>