I tried to install the command line tools on Mavericks following the steps in this very useful post
> xcode-select --install
but after a
You can download your Command Line Tools from daw.apple.com, but try it from Safari instead of Chrome.
I tried it with Chrome for a few hours and apple would not recognize my id/password (it is the same as your AppleID). It required me to change my password after each third try, which was challenging because it would not let you use any password you've used in the last three years.
Signing in via Safari gave me no problems.
The file you are going to look for is Command Line Tools (OS X Mavericks) for Xcode - Late October
If your terminal still says you need to install command line tools, it may be an issue with gcc-4.2. I was able to confirm that was the issue by following my terminal message after I ran "bundle install" on my rails app. If this is your issue, you will do the following follow Housen's solution here. Best of luck