bits I have in my bash/zshrc files

bring_conda.sh

function conda_up () {
       # This function (conda_up) will activate anaconda in your path - to deactivate run conda_down
       CONDA_PATH=/opt/anaconda/bin
       if [[ ":$PATH:" != *":$CONDA_PATH:"* ]]; then
           PATH=$CONDA_PATH:$PATH;
       fi
       }

function conda_down () {
    # Remove conda from the path
    # from: http://stackoverflow.com/a/370192/1087595
    export PATH=`echo ${PATH} | awk -v RS=: -v ORS=: '/anaconda/ {next} {print}'`
}

function sac () {
       # This function is to activate different environments in your conda instalation. 
       # Look at https://conda.io/docs/using/envs.html to learn more about conda environments
       # You can do `conda env list` to see all the conda environments.
       conda_up
       source activate $1
   }

alias sd='source deactivate'  # alias to deactivate the environemnt and go back to the default conda environment (root)