[Boost-users] unix tools

Hello all, since Boost has marvelous cross platform libraries, wouldn't it be an idea to rewrite all the standard commandline unix tools (e.g. cp, grep, ps, ls, diff) in c++ with Boost? Libraries like program options, filesystem and regex already fullfill a lot of the functionality. Only thing left is a person with a good knowledge of the syntax of the cmd line tools and ofc a lot of time:). I mainly use Windows and i really miss these tools from time to time. And yes there is Cygwin but I would prefer just the tools without changing my environment.