Virual Box group - Vboxsf permission issue on /media/sf_directory_name..

The Ideal way of getting access to these files is to allow VirtualBox to automount the shared folder (which will show up under /media/sf_directory_name) and then to add your regular OS user to the vboxsf group (as root #).

Syntax:

# usermod -aG vboxsf <OSUser>

In My case:     

[root@ol6 oracle]# usermod -aG vboxsf oracle

  By default, it looks it look like this

drwxrwx--- 1 root vboxsf 40960 MAY 11:37 sf_directory

so the vboxsf group has full access. By adding your user to that group,

you gain full access. So you no need to worry about changing their permissions