Tag to be used for questions about Microsoft Powershell. For general shell questions, use the [shell] tag. For other shells, use their own tags like [bash] and [zsh]. For questions about scripting, the tag [scripting] should be used along with the shell tag.
PowerShell is a shell developed by Microsoft. Originally a part of Windows operating systems, it became open source on 18 August 2016. It's source code is available on GitHub with installation packages ready for, inter alia, Ubuntu, CentOS, OpenSUSE and macOS.