安装OpenFace时装了个miniconda，之后就进不去anaconda的其它环境了：
(pfld) 。。。。。$ conda env list
# conda environments:
#
/home/deeplearning/anaconda3/home/deeplearning/anaconda3/envs/common/home/deeplearning/anaconda3/envs/openface
/home/deeplearning/anaconda3/envs/pfld
/home/deeplearning/anaconda3/envs/public_env
。。。。。。
base /home/deeplearning/miniconda3
pfld * /home/deeplearning/miniconda3/envs/pfld
(pfld) 。。。。。$ conda activate public_env
EnvironmentNameNotFound: Could not find conda environment: public_env
You can list all discoverable environments with `conda info --envs`.
仔细看，左边这列的"base"，指向miniconda，anaconda的环境都没了名字。说明当前正在miniconda中。
这时需要通过"activate [anaconda的环境路径]"和"source activate"回到anaconda：
(pfld) 。。。。。。$ conda activate /home/deeplearning/anaconda3
(/home/deeplearning/anaconda3) 。。。。。。$ source activate
(/home/deeplearning/anaconda3) 。。。。。。$ conda env list
# conda environments:
#
base * /home/deeplearning/anaconda3
common /home/deeplearning/anaconda3/envs/common
openface /home/deeplearning/anaconda3/envs/openface
pfld /home/deeplearning/anaconda3/envs/pfld
public_env /home/deeplearning/anaconda3/envs/public_env/home/deeplearning/miniconda3
/home/deeplearning/miniconda3/envs/pfld
可以看见anaconda环境的名字都回来了，而miniconda的环境名都消失了，这时便可以使用"conda activate <env_name>"跳转到anaconda的环境。
参考：conda环境名消失的解决办法 (31条消息) conda环境名称消失问题_學霖的博客-CSDN博客_conda环境没有名字
附：openface安装步骤 Setup - OpenFace (cmusatyalab.github.io)
Step 1.
Install miniconda with the following commands wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh bash Miniconda3-latest-Linux-x86_64.sh and follow instructions.
Add a Python 2.7 environment with: conda create --name openface python=2.7
Activate the new env with: source activate openface
Step 2.
Install dependencies Add the conda-forge channel with: conda config --add channels conda-forge conda install opencv numpy pandas scipy scikit-learn scikit-image dlib txaio twisted autobahn OpenSSL pyopenssl imagehash service_identity
Step 3.
Install Torch and dependencies Deactivate the openface environment by opening a new terminal. git clone https://github.com/torch/distro.git ~/torch --recursive cd ~/torch; bash install-deps; ./install.sh *
Execute the following to install the Torch deps for NAME in dpnn nn optim optnet csvigo cutorch cunn fblualib torchx tds; do luarocks install $NAME; done
Step 4.
Install open face in openface environment using source activate openface git clone https://github.com/cmusatyalab/openface.git ~/openface cd openface python setup.py install *
Download dlibs models with: ./models/get-models.sh
Open face is now installed. Test it with * ./demos/classifier.py infer models/openface/celeb-classifier.nn4.small2.v1.pkl ./images/examples/carell.jpg