List conda environments with creation date.

conda-env-list.sh

#!/bin/bash
# ref: https://stackoverflow.com/a/57682857
# uses both system and local conda environment

conda_folders=( `conda info --base`/envs $HOME/.conda/envs )

echo "==> Creation Date       <== Environment Name"
echo "#"
for folder in "${conda_folders[@]}"; do
    for env_hist in "$folder"/*/conda-meta/history; do
        env_prefix=$(dirname $(dirname $env_hist))
        echo "$(head -n1 $env_hist) $env_prefix"
    done
done | sort -h -r