12、Ubuntu系统更换conda源为清华镜像源

• 打开终端

• 打开conda源列表
  sudo gedit ~/.condarc

• 在最上面添加以下内容，保存

  channels:
    - defaults
  show_channel_urls: true
  channel_alias: https://mirrors.tuna.tsinghua.edu.cn/anaconda
  default_channels:
    - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
    - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/r
    - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/msys2
    - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free
    - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/pro
    - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/pytorch/
    - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/
    - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/msys2/
  custom_channels:
    conda-forge: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
    msys2: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
    bioconda: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
    menpo: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
    pytorch: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
    simpleitk: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud