Uh... kinda? Powershell has many POSIX aliases to cmdlets (equivalent to shell built-ins) of allegedly the same functionality. rmdir and rm are both aliases of Remove-Item, ls is Get-ChildItem, cd is Set-Location, cat is Get-Content, and so on.

Of particular note is curl. Windows supplies the real CURL executable (System32/curl.exe), but in a Powershell 5 session, which is still the default on Windows 11 25H2, the curl alias shadows it. curl is an alias of the Invoke-WebRequest cmdlet, which is functionally a headless front-end for Internet Explorer unless the -UseBasicParsing switch is specified. But since IE is dead, if -UseBasicParsing is not specified, the cmdlet will always throw an error. Fucking genius, Microsoft.

https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/rmdir

Apparently.

"rd" and "rmdir" only work on empty directories in MS-DOS (and I assume, by extension, in Windows shell). "deltree" is for nuking a complete tree including files, as the name suggests.

Wait, what do people use other than rmdir?