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 ...

When working in shell sessions on Linux, it is sometimes necessary to investigate the settings for that particular environment, and the env command can help with that. In this 2-minute Linux Tip by ...

You hear this term a lot, but what does it really mean?

The Kerberos authentication method originated at the Massachusetts Institute of Technology in the 1980s, as part of a project called Athena. The project involved integrating the computers on the MIT ...

What's great for programming pros is good enough for beginners.

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 ...