I'm trying to recursively rename a bunch of TFS folders using tf rename, PowerShell and a regular expression but I'm having some issues with PowerShell as I haven't spent much time with it. This is what I've put together so far to replace a leading 5 with 2.3.2 but it isn't working:

dir | foreach { tf rename $_ { $_.Name -replace '^5', '2.3.2' } }

Actual result:

Unrecognized command option 'encodedCommand'.
Unrecognized command option 'encodedCommand'.
Unrecognized command option 'encodedCommand'.
Unrecognized command option 'encodedCommand'.
...etc.

Update:

I got a little closer by doing the following instead:

dir | foreach { $newname = $_.Name -replace "^5", "2.3.2"; tf rename $_ $newname }

My next goal is to make this recurse subdirectories but this seems a bit more challenging (changing it to dir -recurse makes it quit after the parent folders for some reason).

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