If you have Perl, you can do everything he did pretty easily.
So you can install Perl on Windows and then solve the problem.
I am asking him whether he considers that "installing Unix tools". The argument for is that Perl deliberately borrows a lot of its design from a number of Unix tools. The argument against is that there has been a native version of Perl for Windows for many years now. (In fact since Perl 5.005, Windows has been a core target.)
One could easily ask the same question naming other scripting languages such as Python and Ruby.
Cheers,
Ben