4. Set all `.env` variables if there are any remaining. (The code does not check for missing environment variables and assumes that everything is set correctly.)
6. Open the a (user) cronjob editor with `crontab -e` and add the line `0 * * * * /absolute/path/to/post_toots.sh > /dev/null 2>&1`. This cronjob runs hourly and the command outputs are not mailed to the user. Alternatively, `2>&1` can be ommited for debugging purposes if the error outputs should be mailed to the user.