How to check whether there is Tsinghua source / delete Tsinghua source and keep the default source

1, Check whether there is Tsinghua source in the channel

conda config --show channels

2, Add Tsinghua source

conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/
conda config --set show_channel_urls yes
conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/pytorch/
conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/peterjc123/
conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/

 3, Delete source , Only the default source will be left , Sometimes some packages can be downloaded

（ For example, I created anaconda When the virtual environment fails 、 When installing some libraries fails , Only switching to the default source can succeed ）

eg:(1 Bar message ) How to use anaconda prompt Clear the manually set Tsinghua image source in , Use it directly anaconda Default channel for _ Comfortable voyage blog -CSDN Blog _anaconda Cancel Tsinghua source
(1 Bar message ) Ubantu Suddenly, I can't re-establish a new virtual environment _ Comfortable voyage blog -CSDN Blog

conda config --remove-key channels