You probably have a rmdir.exe somewhere in your PATH.
Check to verify: where rmdir.exe.

The rmdir, probably from the unxutils will not accept options with slashes, contrary to the cmd built-in rmdir.

A perl -e "`rmdir /s /q testdir`;" works flawless for me (no exe present here).

In reply to Re: Issue with backticks in ActiveState by pKai
in thread Issue with backticks in ActiveState by freddo411

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