The program 'nvcc' is currently not installed. You can install it by typing:

报错：$ nvcc -V
The program 'nvcc' is currently not installed. You can install it by typing:
sudo apt install nvidia-cuda-toolkit

提示：不要盲目sudo apt install nvidia-cuda-toolkit 去安装哦。

解决：比如这是一台你和别人共用的机器。先看看机器上别人有没有已经安装过CUDA

$ ls /usr/local/cuda*

如果没有安装，可以参考：linux ubuntu 18.04 卸载cuda10.2 安装cuda 9.0、Ubuntu 18.04搭建tensorflow-gpu环境 等帖子进行安装。

如果已经装了，则编辑~/.bashrc添加配置即可：

# cuda 10.1
export LD_LIBRARY_PATH=/usr/local/cuda/lib
export PATH=$PATH:/usr/local/cuda/bin
# cuda 10.1

使配置生效：

$ source ~/.bashrc 

大功告成：

$ nvcc -V
nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2019 NVIDIA Corporation
Built on Fri_Feb__8_19:08:17_PST_2019
Cuda compilation tools, release 10.1, V10.1.105

感谢：https://blog.csdn.net/qq_34869928/article/details/100544888