[ Level 2 ] Allow VirtualBox guest OS to create symbolic link file in host shared folder.

Allow VirtualBox guest OS to create symbolic link file in host shared folder: 
$ VBoxManage setextradata "VM Name" VBoxInternal2/SharedFoldersEnableSymlinksCreate[absolution path for shared folder] 1
$ VBoxManage setextradata "VM Name" VBoxInternal2/SharedFoldersEnableSymlinksCreate/[shared name] 1
Ex.
$ VBoxManage setextradata "MyVM" VBoxInternal2/SharedFoldersEnableSymlinksCreate/home/stanley/shared_folder 1
$ VBoxManage setextradata "MyVM" VBoxInternal2/SharedFoldersEnableSymlinksCreate/shared_name 1

And you could verify it by command:
VBoxManage getextradata "MyVM" enumerate

After setup, you have to shutdown VM (not restart) and boot up it again.

Wish this helps.

regards,
Stanley Huang

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