Install and Use BusyBox on Windows

This skill provides Unix command-line tools on Windows via BusyBox, a single binary that implements many common Unix utilities. It's Windows-only - on UNIX systems, the skill explicitly says to stop and not proceed. If busybox.exe isn't already present, it detects the CPU type (Get-CimInstance -ClassName Win32_Processor) and Windows version (Get-ItemProperty on the registry's CurrentVersion key) via PowerShell, then downloads the matching build: 32-bit x86 (ANSI), 64-bit x86 (ANSI), 64-bit x86 (Unicode), or 64-bit ARM (Unicode), each via a specific Invoke-WebRequest command.

Once downloaded, busybox.exe --list shows available commands, and any Unix command is run by prefixing it with busybox.exe (e.g. busybox.exe ls -1). Commands under a different working directory use the absolute path to busybox.exe.

Use this only on Windows when Unix commands are needed but not natively available - detecting the correct CPU/OS combination and fetching the matching BusyBox build if one isn't already present.

Not applicable on UNIX/Linux/macOS systems, which already have native Unix tooling - the skill explicitly instructs to stop if not on Windows.

Inputs: none beyond confirming the platform is Windows and checking whether busybox.exe already exists locally.

Outputs: a downloaded busybox.exe matching the system's CPU architecture and Windows version, and Unix commands executed by prefixing them with busybox.exe.

BusyBox (frippery.org build for Windows), PowerShell (Get-CimInstance, Get-ItemProperty, Invoke-WebRequest).

Anyone working on Windows who needs Unix command-line tools available without installing WSL or a full Unix environment.