CUDA:

Run the following command in the terminal:

nvcc -V

If you see the error: bash: nvcc: command not found

First export the environment variables:

$ export PATH=/usr/local/cuda-11/bin:$PATH

$ export LD_LIBRARY_PATH=/usr/local/cuda-11/lib64:$LD_LIBRARY_PATH

Then run nvcc -V again.

cuDNN:

Run the following command in the terminal:

$ dpkg --list | grep cudnn

OpenCV:

Run the following command in the terminal:

$ dpkg --list | grep libopencv

TensorRT:

Run the following command in the terminal:

$ pip list | grep tensorrt