install pyenv on CentOS

install_pyenv_centos.sh

git clone https://github.com/pyenv/pyenv.git ~/.pyenv
cd ~/.pyenv && src/configure && make -C src

echo -e 'if shopt -q login_shell; then' \
      '\n  export PYENV_ROOT="$HOME/.pyenv"' \
      '\n  export PATH="$PYENV_ROOT/bin:$PATH"' \
      '\n  eval "$(pyenv init --path)"' \
      '\nfi' >> ~/.bashrc
echo -e 'if [ -z "$BASH_VERSION" ]; then'\
      '\n  export PYENV_ROOT="$HOME/.pyenv"'\
      '\n  export PATH="$PYENV_ROOT/bin:$PATH"'\
      '\n  eval "$(pyenv init --path)"'\
      '\nfi' >> ~/.profile

echo -e 'source ~/.profile' >> ~/.bash_profile
echo 'eval "$(pyenv init -)"' >> ~/.bash_profile
echo 'eval "$(pyenv virtualenv-init -)"' >> ~/.bash_profile