PowerShell is Microsoft's modern replacement for the traditional Windows Command Prompt (cmd.exe). It combines a command-line interface with a full scripting language, letting you run single commands or write complex programmes to automate repetitive tasks on Windows machines.
Unlike Command Prompt, which uses simple batch syntax, PowerShell is built on the .NET Framework and treats everything as an object. This means you can pass data between commands more easily and manipulate system information in powerful ways. For example, you can retrieve a list of running processes, filter them by memory usage, and export the results to a file in one pipeline of commands.
Why it matters for tech buyers: If you manage multiple Windows PCs, set up servers, or work in IT support, PowerShell skills save significant time. System administrators use it to deploy software updates, manage user accounts, configure network settings, and monitor system health across dozens of machines simultaneously. It's also increasingly important for developers working with Azure cloud services or DevOps pipelines.
Key things to know: PowerShell now runs on Mac and Linux as well as Windows, so it's becoming a cross-platform tool. Older systems might have PowerShell 5.1, whilst newer Windows 11 machines include PowerShell 7. Scripts use a .ps1 file extension. Security restrictions called execution policies can prevent scripts from running, which sometimes confuses beginners.
What you can do with it: Automate system backups, batch-rename files, manage Windows updates, create network diagnostics tools, and integrate with cloud services. Organisations often use PowerShell to standardise configurations across fleets of computers.