Unix is a powerful and versatile operating system that has become a popular choice for servers, workstations, and even personal computers. One of the fundamental tasks when working with Unix-based ...

Businesses have proprietary information such as customer lists that need protection. The easiest way to protect only a few critical files is to encrypt and decrypt them manually. Unix system come with ...

Log files on Unix systems can easily grow to hundreds of thousands or even millions of lines. Here's a simple way to pluck out every Nth line. Head and tail are great commands when you want to look ...

If you use Windows today and type ls, cat, grep, or awk in a terminal, there is a good chance something useful will happen. That was not always true. For most of the history of personal computing, ...