nbopen minimal

.nbopen

function nbopen(){
    # For this function to work, in .jupyter/jupyter_notebook_config.py, set `c.NotebookApp.notebook_dir = '/'` so notebook always launches from root
    if [ $# -eq 0 ] ; then
        if lsof -Pi :8888 -sTCP:LISTEN -t > /dev/null ; then
            echo "A Jupyter Notebook is already open on port 8888"
        else
            jupyter notebook --port 8888
        fi
    else
        if [ "${1:0:1}" != "/" ] ; then
            address=$(pwd)/$1
        else
            address=$1
        fi
        if lsof -Pi :8888 -sTCP:LISTEN -t > /dev/null ; then
            open http://localhost:8888/tree"$address"
        else
            jupyter notebook "$address" --port 8888
        fi
    fi
}