ubuntu16.04 install YCM

python3 ./install.py --clang-completer
cd ~/.vim/bundle/YouCompleteMe
rm .ycm_extra_conf.py
wget https://raw.githubusercontent.com/Valloric/ycmd/66030cd94299114ae316796f3cad181cac8a007c/.ycm_extra_conf.py
echo 'let  g:ycm_global_ycm_extra_conf="~/.vim/bundle/YouCompleteMe/.ycm_extra_conf.py"' >> ~/.vimrc

:YcmDebugInfo view err log