I tried to install the command line tools on Mavericks following the steps in this very useful post
> xcode-select --install
but after a few short seconds I get the message

This seems wrong. Does anyone know how to solve this problem?
Whenever I navigate to the page that @Nikos M. is suggesting

I get this message

I followed @Rich's suggestion and I was able to download the package and install it which I wasn't able to do before, but I've found that I still don't have access to a lot of the commands that I should like arp or diskutil just to name two that I've encountered recently.