how to open jupyter notebook in a specific environment code example

Example 1: conda environment not showing up in jupyter

source activate myenv
python -m ipykernel install --user --name myenv --display-name "Python (myenv)"

Example 2: open jupyter notebook with conda envirionment

conda install -c anaconda ipykernel

Example 3: open jupyter notebook with conda envirionment

python -m ipykernel install --user --name=firstEnv