$ sudo rm -rf / === NPM install
This was how I knew OSX was a real Un*x....I was messing around with...I dunno...brew's predacessor? A package manager that installed linux apps on OSX...everything was based under /opt, so it was easy to just nuke and restart to clean up the cruft.<p>typed sudo rm -rf / opt<p>And let it rip.<p>Then got a weird error message, like a library couldn't load....then the icons in the dock went away, then the only thing that was working properly was the web browser windows that were still fully loaded in memory<p>then noticed the SPACE between '/' and 'opt'<p>rm -rf was rm -rf-ing from root.<p>Valuable lesson learned that day.