官网 https://docs.anaconda.com/anaconda/install/linux/
conda env export > environment.yaml
conda env create -f environment.yaml
wget <https://repo.anaconda.com/archive/Anaconda3-2023.07-2-Linux-x86_64.sh>
sh Anaconda3-2023.07-2-Linux-x86_64.sh
conda env create -n py37 python=3.7
# 新版 conda 变了
conda create -n py38 python=3.8
# 复制一个已有的环境
conda create -n new_env --clone old_env