I complained about this in another recent thread, about 15 hours ago, at <a href="https://news.ycombinator.com/item?id=15953505" rel="nofollow">https://news.ycombinator.com/item?id=15953505</a> .<p>In short, several of these commands are safe to use. "rm -rf", for example, was defanged over 10 years ago for most Linux environments.