What Am I Doing? What is Going On? You are learning a different way to interact with a computer, working at the command line. It means typing commands at a prompt - no mouse. Typing only! Why? What is ...

These are the formal rules for forming basic UNIX regular expressions. For some simple examples, skip to Simple Examples. The rules come from the Solaris 7 regexp(5) manual page. The I2A2 reflector ...

You will most often use Bash functions to make your shell life easier; instead of typing out complex command pipelines, create a function and inject arguments. You'd place these in your bashrc file, ...

Crucial early evolutionary step found, imaged, and ... amazingly ... works Computer History Museum software curator Al Kossow has successfully retrieved the contents of the over-half-a-century old ...