1 Permission denied
报错：
-bash: ./compile.sh: Permission denied
没有操作权限，改为赋予最高权限（777）：
chmod 777 compile.sh2 cuda 问题
报错：
unable to execute '/usr/local/cuda-9.0/bin/nvcc': No such file or directoryerror: command '/usr/local/cuda-9.0/bin/nvcc' failed with exit status 1
找不到cuda下nvcc文件，需要找到自己的nvcc文件所在地，然后输入：
./compile.sh \ --export CUDA_HOME=/usr/local/cuda-8.0/bin如果还不行，需要查看一下是否有nvcc：
nvcc --version2.1 nvcc正常
若nvcc正常，设置cuda路径首先执行：
sudo vim ~/.bashrc设置为：
export PATH=/usr/local/cuda-9.0/bin:$PATH
export LD_LIBRARY_PATH=/usr/local/cuda/lib64:$LD_LIBRARY_PATH然后执行：
sudo vim /etc/profile末尾添加：
export CUDA_HOME=/usr/local/cuda-9.0
export PATH=/MATLAB/R2016b/bin:/usr/local/cuda-9.0/bin:/anaconda3/bin:$PATH
export LD_LIBRARY_PATH=/usr/local/cuda-9.0/lib64:$LD_LIBRARY_PATH然后执行
source /etc/profile使链接生效
2.2 command not found
报错：
-bash: nvcc: command not found
应该安装nvcc：
sudo apt-get install nvidia-cuda-toolkit报错：
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
升级apt-get update：
sudo apt-get update报错：
Failed to connect to nvidia.github.io port 443: Connection timed out
2.2.1 修改源
则应该修改源：
（1）修改前先做备份：
sudo cp /etc/apt/sources.list /etc/apt/sources.list.old（2）打开sources.list文件：
sudo vim /etc/apt/sources.list替换为其他源：
清华源：
# deb cdrom:[Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)]/ xenial main restricted
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial universe
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates universe
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security universe
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security multiverse阿里源：
# deb cdrom:[Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)]/ xenial main restricted
deb-src http://archive.ubuntu.com/ubuntu xenial main restricted #Added by software-properties
deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted
deb-src http://mirrors.aliyun.com/ubuntu/ xenial main restricted multiverse universe #Added by software-properties
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted multiverse universe #Added by software-properties
deb http://mirrors.aliyun.com/ubuntu/ xenial universe
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates universe
deb http://mirrors.aliyun.com/ubuntu/ xenial multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse #Added by software-properties
deb http://archive.canonical.com/ubuntu xenial partner
deb-src http://archive.canonical.com/ubuntu xenial partner
deb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted multiverse universe #Added by software-properties
deb http://mirrors.aliyun.com/ubuntu/ xenial-security universe
deb http://mirrors.aliyun.com/ubuntu/ xenial-security multiverse2.2.2 修改 nameserver
修改/etc/resolv.conf文件为：
nameserver 8.8.8.8
nameserver 4.2.2.23 not in the sudoers file
报错：
××× is not in the sudoers file. This incident will be reported.
1.切换到超级用户root：
su root2.查看/etc/sudoers权限：
ls -all /etc/sudoers可以看到当前权限为744：
-r--r----- 1 root root 744 4月 16 20:36 /etc/sudoers
3.更改权限为777（表示允许操作）：
chmod 777 /etc/sudoers4.编辑/etc/sudoers：
vi /etc/sudoers5.在root ALL=(ALL:ALL) ALL 下面添加一行：
XXX ALL=(ALL)ALL其中XXX表示当前用户名
6.把/etc/sudoers权限改回440：
chmod 440 /etc/sudoers然后就可以切换回自己的用户操作了
4 ASSERT
报错：
ASSERT: "false" in file qasciikey.cpp, line 501
OpenCV版本不对，没有里面没有tracker。安装contrib的OpenCV：
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple opencv-contrib-python如果提示使用--user：
pip install --user -i https://pypi.tuna.tsinghua.edu.cn/simple opencv-contrib-python5 no commands supplied
报错：
no commands supplied
应该将 python setup.py 改为 python setup.py install 。
6 FileNotFoundError
报错：
[Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', /home/snowstorm/mmdetection']
磁盘空间已满，清理空间。
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代码的路
