Virtualbox : shared folder with guest

This how-to works independently of the host platform.

On virtualbox :

1. Open the Configuration window of the VM (guest)
2. Select Shared folder on the left menu
3. Click on the icon corresponding to Add a shared folder
4. Complete Folder path and Folder name fields, ex: /folder/to/share and folder-shared

On the guest VM:

1. Create a folder (an existant one can be used), ex:

$ mkdir /home/user/vbox-shared

2. Mount the shared folder and is file system as root, ex:

# mount -t vboxsf [FOLDER_NAME] [GUEST_PATH]

with [FOLDER_NAME] the name of the shared folder created on virtualbox and [GUEST_PATH] the folder path where the share file system have to be mounted.

So here that will give:

# mount -t vboxsf folder-shared /home/user/vbox-shared

Note : Even if a permanent shared folder was created, the mount command will have to be runned each time the guest restart.

Mounting a file system requires root privileges, but instead of mounting the file system as roor like previously, it's preferable to mount it as a user:

$ mount -t vboxsf -o umask=0022,gid=1000,uid=1000 folder-shared /home/user/vbox-shared

Where the gid and uid value math with the ones of the user (it can be check with the id command).