Install CUDA Toolkit v8.0 and cuDNN v6.0 on Ubuntu 16.04 (post Cuda 9 release)

rm-9_install_8_and_6.sh

#!/bin/bash

# Uninstall Cuda 9
sudo apt-get --purge remove cuda
sudo apt autoremove
sudo apt-get clean

# install CUDA Toolkit v8.0
# instructions from https://developer.nvidia.com/cuda-downloads (linux -> x86_64 -> Ubuntu -> 16.04 -> deb (network))
CUDA_REPO_PKG="cuda-repo-ubuntu1604_8.0.61-1_amd64.deb"
wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1604/x86_64/${CUDA_REPO_PKG}
sudo dpkg -i ${CUDA_REPO_PKG}
sudo apt-get update
sudo apt-get -y install cuda-8-0

# install cuDNN v6.0
CUDNN_TAR_FILE="cudnn-8.0-linux-x64-v6.0.tgz"
wget http://developer.download.nvidia.com/compute/redist/cudnn/v6.0/${CUDNN_TAR_FILE}
tar -xzvf ${CUDNN_TAR_FILE}
sudo cp -P cuda/include/cudnn.h /usr/local/cuda-8.0/include
sudo cp -P cuda/lib64/libcudnn* /usr/local/cuda-8.0/lib64/
sudo chmod a+r /usr/local/cuda-8.0/lib64/libcudnn*

# set environment variables permanently

PATH_EXPORT='export PATH=/usr/local/cuda-8.0/bin${PATH:+:${PATH}}'
LD_EXPORT='export LD_LIBRARY_PATH=/usr/local/cuda-8.0/lib64${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}'
BASHRC=~/.bashrc

echo $PATH_EXPORT >> $BASHRC
echo $LD_EXPORT >> $BASHRC