Installing Command Line Tools on Mac OS S Mavericks 10.9
The Mac Tip Simply Indicate How to Download and Install the Command Line Developer Tools for Xcode on Mac OS X 10.9 Mavericks.
The Command Line Developer Tools enables UNIX-style development via Terminal by installing command line developer tools, as well as Mac OS X SDK frameworks and headers.
Many useful tools are included in the Command Line Tools, such Apple LLVM compiler, linker, and Make. If you use Xcode, these tools are also embedded within the Xcode IDE.

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Login or Register on the Apple Developer Site:
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Download the Command Line Tools for Xcode.
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Double-Click on the .dmg Image.
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Double-Click on the Package Installer
And Easily Follow Wizard…
How to Getting-Started Installing Packages on Mac
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