Helpful scripts Kill app at port lsof -t -i :4201 | xargs kill Set localtunnel as SERVER URL environment tunnel 8080 set up localtunnel for port 8080 add export line to ~/config/private/export.sh this saves the URL to the SERVER_URL environment variable when a new shell is created Helpful tools localtunnel - npm i -g localtunnel -> lt -p 8080 Serve - npm i -g serve -> serve . Copy all files from bills folder for a given month cp 2020_08_*/*.* ~/docs/print move last n commits into new branch and reset old to before (source: howchoo.com git branch <new branch> git reset --keep HEAD~<N> git checkout <new branch>