March 26, 2012, 3:39 PM —
Linux is awesome. It's a powerful, capable, flexible operating system with tremendous potential. But, it's never going to be a factor on the desktop, so don't even waste your time considering it.
On the server side, Linux is kicking ass and taking names. An IDC report from 2010 claims that Linux made up more than 20% of the server market. I've seen some estimates claiming it could be significantly higher than that today. Recent reports claim that Amazon alone is using as many as half a million Linux servers in data centers around the world to power its cloud services--a strong indicator of just how established Linux is.
That's great, but on the desktop side of the fence Linux is a non-issue. Compared to Microsoft Windows, even Mac OS X has trivial desktop market share, but it's enough to put it on the radar, and Mac OS X has been growing strong in recent years. Linux, on the other hand, has never really been more than a rounding error. It is up slightly, but it generally makes up about one percent of the desktop OS market.