Sharing folders on VirtualBox from Mac host to Linux guest
Not sure if it was necessary, but it didn't work for me until I used lowercase for the VirtualBox name of the shared folder (the folder itself was still capitalized).
mount -t vboxsf -o uid=ben,gid=ben,umask=022 notes /home/ben/Notes
That is what worked, here are some things that didn't work, for this folder only
virtualbox shared folder location in guest machine
mount -t vboxsf TempFiles /tmp/mnt
Once this command has been executed, the files in the host folder will be accessible in /tmp/mnt.
Currently I have to run this every time I want the folder to be synched in Mac OS X:
sudo mount -t vboxsf ubuntu /home/ben/Macosx
And then I need to use sudo to do anything in that directory in Ubuntu. Still some kinks in the system.