conda.md

Conda tutorial

Some common conda commands I frequently use (and yet forget)

Create environment

• Fresh env conda create --name myenv python=3.5
• From .yml file conda env create -f environment.yml

Use environment

Activate conda activate myenv Deactivate conda deactivate

Display

• All envs conda env list
• All packages in the curretly active env conda list

Install from list

• Install from file but crashes on error
  conda install --yes --file requirements.txt
• Read from list, skip error
  while read requirement; do conda install --yes $requirement; done < requirements.txt

Set environment variables for env

• In anaconda3/envs/myenv

mkdir -p ./etc/conda/activate.d
mkdir -p ./etc/conda/deactivate.d
touch ./etc/conda/activate.d/env_vars.sh
touch ./etc/conda/deactivate.d/env_vars.sh

• Activate

#!/bin/sh

export PYTHONPATH=$HOME/caffe/python:$PYTHONPATH

• Deativate

#!/bin/sh

unset PYTHONPATH

Export environment

Save the environment as conda env export > environment.yml

Remove environment

conda remove --name myenv --all

References

https://conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html#activating-an-environment