GNU/Linux Debian Stretch Installing NVIDIA Driver Guide
How to Install NVIDIA Graphics Driver on Debian Stretch 9.x GNU/Linux desktop – Step by step Tutorial.
And the NVIDIA Driver Debian Stretch Setup is a breeze, requiring just a few straightforward Shell Commands to complete.
Moreover, following the NVIDIA Recommendations is better to use the tested NVIDIA Linux Graphics Driver from the NVIDIA Driver Debian Repository.
Most noteworthy, prior to the Driver Setup you may consult:
Finally, with the nvidia-settings Tool you can configure Brightness, Gamma, XVideo attributes, Temperature, and OpenGL.

1. Launching Terminal
How to QuickStart with Command Line on Debian GNU/Linux
First, Update the Apt Repo Sources with:
sudo apt update
Authenticate with the User Admin Pass.
If Got “User is Not in Sudoers file” then see: How to Enable sudo.
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