This question already has an answer here:
There are lots of questions about .bashrc. But I couldn't have found anything about this one: why are there two .bashrcs? ~/.bashrc and /etc/skel/.bashrc. When I compare them, I find no difference. The same thing serves right about .profile and .bash_logout.
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Every file in /etc/skel gets copied to a (new) users $HOME directory when your create a new user. If they are the same you either have not made any changes to your file (most likely) or you copied your custom file to /etc/skel.
See:
How do I set up new users with skel
http://www.linfo.org/etc_skel.html
http://www.linuxhowtos.org/Tips%20and%20Tricks/using_skel.htm
/etc/skel/.bashrc is a default .bashrc for every user created in the system.
~/.bashrc is individual for each user.
