Making a CPU or indeed a whole computer system from scratch using discrete logic chips is by no means an unusual project, but it’s still one that requires quite a lot of technical ability and ...

If you're looking for a Unix-like, POSIX-compatible, real-time kernel, there's no shortage of projects trying to build one. Ironclad stands out for using the Ada programming language and its formally ...

Ken Thompson and Dennis Ritchie at a PDP-11. Peter Hamer [CC BY-SA 2.0] Last week the computing world celebrated an important anniversary: the UNIX operating system turned 50 years old. What was ...

Conforming to the basic architecture and principles of the Unix operating system. Unix-like operating systems, such as Linux, may be POSIX compliant, which means that applications communicate with the ...

The “What’s the difference between UNIX and Linux?” question can be answered similar to the analogy section that many of us had to complete on the SAT test; UNIX is to DOS as Linux is to Windows. That ...

Linux, macOS, FreeBSD, Android, and other operating systems can trace their lineage back to the early commercial versions of Unix. One of the missing links in that chain, UNIX Fourth Edition, is now ...