An old book about an even older operating system.

But these mistakes are also easy to fix.

I’ve heard that those who can’t remember history are condemned to repeat it but for Unix users, repeating history is not only advantageous, it’s something of a skill. When working on the command line, ...

Happy Birthday, Linux. At 30 years old, you have made quite a reputation for yourself. Having spirited the rise of open-source software, you have turned the world of proprietary computing upside down.