Linux continues to evolve. Today, it's the world's dominant Internet server platform. Google runs on Linux. So does Amazon — including its market-leading EC2 cloud-based platform. It's no wonder more and more system administrators and web developers need to be fluent in Linux. But fluency means knowing how to operate a Linux system from the command line, not from a pre-programmed GUI: that's the only way to gain full control. Through three previous editions, Mark Sobell's A Practical Guide to Linux Commands, Editors, and Shell Programming has earned a global reputation as the best way to gain this mastery. Now, Sobell and top Linux expert Matthew Helmke have thoroughly updated this best-seller to reflect Linux's latest innovations.