Linux isn't a certified Unix system, and some say it definitely isn't Unix. The key question for a business is if a commercial Unix flavor is enough like Linux that you can make an easy transition ...

Setting aside legal issues afflicting the word, Unix is neither a brand nor a particular product: it is a set of ideas - implemented differently by the people behind Linux, the BSDs and Solaris, ...

But Unix, he said, did provide ideas: "Linux has always credited Unix. There has never been any question about the fact that Linux was very open about taking a lot of good ideas from Unix." ...

Sure, Linux is popular, but fans of the OpenBSD operating system think they've got something better.

Debian GNU/Hurd 2025 is the latest release of the other GNU operating system. The announcement email from developer Samuel ...

Linux is more comfortable but isn’t likely to run on a Z80. Or is it? Linux borrows from Unix and back in the 1980s [Doug Braun] wrote a Unix-like OS for the Z80 called UZI.