The free vSphere Hypervisor 5.0 lets companies enter into professional virtualization without the overhead of a commercial solution. If you decide you need additional enhancements later, you can always upgrade to enhanced VMware solutions.

• Red Hat Addresses Secure Boot
• FSF Addresses Secure Boot
• Android 4.1 Jelly Bean

Creating secure websites with their own privileges on a single server.

Klaus Knopper is the creator of Knoppix and co-founder of LinuxTag expo. He currently works as a teacher, programmer, and consultant. If you have a configuration problem, or if you just want to learn more about how Linux works, send your questions to: klaus@linux-magazine.com

The Byobu session manager extends the shell, adding a range of useful functions, such as splitting the screen, running programs in the background, or organizing programs in tabs. In particular, administrators who rely on SSH will appreciate Byobu.

The virtualization breakthrough has not reduced the number and diversity of operating systems that admins must install and manage. Uranos server sets out to give administrators of complex operating system zoos more freedom.

More and more Windows applications run on Linux thanks to Wine. If you spend a little time on configuration and troubleshooting, you won’t be stuck in Windows – even with applications that no one dreamed would run on Linux.

Clonezilla makes backing up and restoring your system an easy affair that only involves a few key strokes. A homegrown solution reduces the time and effort to the act of slotting in a CD, on which you previously burned a Perl script.