2 Installation details The installer must be executed as root with either install or uninstall as the first parame- ter. sudo ./VirtualBox.run install Or if you do not have the “sudo” command available, run the following as root instead: ./VirtualBox.run install After that you need to put every user which should be able to access USB devices from VirtualBox guests in the group vboxusers, either through the GUI user management tools or by running the following command as root: sudo usermod -a -G vboxusers username Note: The usermod command of some older Linux distributions does not support the -a option (which adds the user to the given group without affecting membership of other groups). In this case, find out the current group memberships with the groups command and add all these groups in a comma-separated list to the command line after the -G option, e.g. like this: usermod -G group1,group2,vboxusers username. 2.3.3.3 Performing a manual installation If, for any reason, you cannot use the shell script installer described previously, you can also perform a manual installation. Invoke the installer like this: ./VirtualBox.run --keep --noexec This will unpack all the files needed for installation in the directory install under the current directory. The VirtualBox application files are contained in VirtualBox.tar.bz2 which you can unpack to any directory on your system. For example: sudo mkdir /opt/VirtualBox sudo tar jxf ./install/VirtualBox.tar.bz2 -C /opt/VirtualBox or as root: mkdir /opt/VirtualBox tar jxf ./install/VirtualBox.tar.bz2 -C /opt/VirtualBox The sources for VirtualBox’s kernel module are provided in the src directory. To build the module, change to the directory and issue make If everything builds correctly, issue the following command to install the module to the appro- priate module directory: sudo make install In case you do not have sudo, switch the user account to root and perform make install 34