Drush 8: quick passwordless site syncing and other time savers for Drupal developers

A little while ago I wrote a guide on installing Drush 8 on Debian or Ubuntu and touched briefly on some of the functionality Drush has to offer. I now want to show you how to configure Drush to quickly sync your databases and files. I'll also point out a few other time savers along the way that I use in my daily work as a Drupal developer. If you are working on many sites, some of these tricks can shave significant time off your week.