How to let virtualbox shared folder can be accessed by user account

1. Install the virtualbox guest tool 

    sudo apt install virtualbox-guest-utils

2. Add user to the virtualbox group

  sudo usermod -aG vboxsf "user_name"

3. mount the shared folder as user


  sudo mount -t vboxsf -o uid=$(id -u user_name),gid=$(id -g user_name) adb /SharedFolder

4. Change the folder access attribute

  sudo chmod -R 777 /SharedFolder

 

After finishing above steps, you can directly read/write the shared folder without sudo.