The garbage he's giving to it (e.g. "/b") is the cause of the error messages.

If he invokes dir through a shell, the shell builtin would be invoked, and it takes "/b".

If he invokes dir dircetly, the gnuwin32 executable would be invoked, and it doesn't take "/b".

In reply to Re^4: IPC::Run3 error by ikegami
in thread IPC::Run3 error by Anonymous Monk

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