On Windows 11, PowerShell is a command-line interface (CLI) developed by Microsoft to execute commands and run scripts. In a ...

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, ...

Sometimes you just want Windows to shut down. But instead of shutting down quickly, the system seems to ponder, blocked by running processes, background services, or open apps. However, for decades ...