download entire android 4.4 source code

Can somebody please send me a url from which I can download entire source code of different android versions?
cyber-33Asked:
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EirmanChief Operations ManagerCommented:
They are freely available on android.com
As far as I know, you need to install the repo tool first.

https://source.android.com/source/
https://source.android.com/source/downloading.html

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cyber-33Author Commented:
I am not sure that these urls will work for me. I am using Windows 7. Will Repo work on Windows?
EirmanChief Operations ManagerCommented:
Quote .... To work with the Android code, you will need to use both Git and Repo. In most situations, you can use Git instead of Repo, or mix Repo and Git commands to form complex commands. Using Repo for basic across-network operations will make your work much simpler, however ........

Read the rest here .....
https://source.android.com/source/developing.html

I got a bit lost researching GIT! Interesting links ...
http://en.wikipedia.org/wiki/Git_%28software%29
https://android.googlesource.com/
http://xda-university.com/as-a-developer/repo-tips-tricks
cyber-33Author Commented:
I lost hours trying to configure git and repo on a windows machine. And then I found this: a url where the archives are available for download (posting for benefit of others):
http://grepcode.com/project/repository.grepcode.com/java/ext/com.google.android/android/
EirmanChief Operations ManagerCommented:
Thanks for adding to the knowledgebase cyber-33
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