1. Environment Management Link to heading

Create a virtual environment

conda create -n <env_name> python=<version>  # -n specifies the environment name, python= specifies the Python version
conda env create -f environment.yml  # Create environment based on the environment.yml file

Delete a virtual environment
```
conda env remove -n <env_name>
```

Activate/Switch virtual environments

conda activate <env_name> #  Activate the virtual environment by name
or
source activate <env_name>

Deactivate the current virtual environment
```
conda deactivate
```
List all virtual environments
```
conda env list
```
View current virtual environment information
```
conda info
```
Update the environment based on the environment.yml file
```
conda env update -f environment.yml
```
Display the list of mirror sources
```
conda config --show channels
```

2. Environment Configuration Link to heading

Export the virtual environment configuration to a .yaml file
```
conda env export > environment.yaml
```
Create a virtual environment using a .yaml file
```
conda env create -f environment.yaml
```
Update a virtual environment using a .yaml file
```
conda env update -f environment.yaml
```

3. Package Management Link to heading

Install a package

conda install package_name # conda install numpy
conda install package_name=version # conda install numpy=1.16.0

Update a package

conda update package_name # conda update numpy

4. Change Source Link to heading

conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/
conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
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/conda-forge/
conda config --set show_channel_urls yes # Display the source URL

conda clean -i # Clean index cache