Simply put, environment variables are variables that are set up in your shell when you log in. They are called “environment variables” because most of them affect the way your Unix shell works for you ...

Account administration in a distributed UNIX/Linux environment can become complicated and messy if done by hand. Large sites use special tools to deal with this problem. In this article, I describe ...

The Unix underpinnings of Mac OS make it feel familiar and accessible to programmers used to working in Unix-like environments. Apple’s Xcode IDE and other development tools are thoughtfully crafted ...