CentOS7 升级 Git 到最新版

git版本升级：

git clone https://github.com/iuscommunity/automation-examples
cd automation-examples/
git checkout bash
sudo ./enable-ius.sh
sudo yum swap git git2u

添加自动补全：

git clone https://github.com/markgandolfo/git-bash-completion.git
cp find . -name "git-completion.bash" ~/.git-completion.bash
source ~/.git-completion.bash
echo “source ~/.git-completion.bash” >> ~/.bashrc

参考资料：https://blog.youkuaiyun.com/tangg555/article/details/79697896
https://blog.youkuaiyun.com/jaket5219999/article/details/78398916