title: How to enable two-way folder sync in Vagrant with VirtualBox?
body: <p>I haven't used Vagrant on Linux for a while. When I started using the new version (Vagrant 1.8), I was faced with a problem: files created inside the guest VM didn't appear on the host machine's synced folder.</p>
  
  <p>How do I force Vagrant to sync files from the guest OS to the host OS?</p>