Install git
sudo -i
yum install git
Create ssh key
cd ~
mkdir .ssh
chmod 700 .ssh
cd .ssh
ssh-keygen # enter, enter, enter
mv id_rsa moyummygit
mv id_rsa.pub moyummygit.pub
cat moyummygit.pub # "ssh-rsa [blahblahblah]== [blahblah]"
Create or edit ~/.ssh/config
Host github.com
PreferredAuthentications publickey
IdentityFile ~/.ssh/moyummygit
Add ssh key to your github account through https://github.com/settings/keys
Try cloning a git through protocol
git clone git@github.com:MoYummy/Ruby.git
Try ssh -vT git@github.com for trouble shooting
