Every time the computer restarts, have cut into the virtual environment, the command always forget. If IDE, you can specify interpeter easily switch.
First conda info --env view the current environment there are few
To activate / deactivate environment
source activate the name of the environment
source deactivate environment name
If windows, does not require previous source
Delete the environment
conda remove -n name --all environment
Note: Before deleting an environment, it must first source deactivate