Virtualbox guest setup

virtualbox-guest.sh

#!/bin/sh -e
#
# wget -O virtualbox-guest.sh https://goo.gl/BYGYEx
# chmod +x virtualbox-guest.sh
# sudo ./virtualbox-guest.sh
#
if [ $(id -u) != 0 ]; then
	echo "sudo, remember?" 1>&2
	exit 1
fi

. /etc/os-release
DISTRO="$NAME"
case "$DISTRO" in
	"Ubuntu")
		echo "Ubuntu supports virtualbox guest additions natively"
		exit 0
		;;
	"Fedora")
		dnf install -y gcc kernel kernel-devel kernel-headers dkms make bzip2 perl
		dnf update -y gcc kernel kernel-devel kernel-headers dkms make bzip2 perl
		kpkg=$(rpm -q kernel-devel | sort | tail -n 1)
		kver=$(uname -r)
		dver=${kpkg#kernel-devel-}
		if [ "$kver" != "$dver" ]; then
			echo
			echo $kpkg does not match:
			echo running kernel $kver
			echo
			echo Reboot?
			exit 1
		fi
		KERN_DIR=/usr/src/kernels/$kver
		export KERN_DIR
		echo KERN_DIR=$KERN_DIR
		mkdir -p /media/VirtualBoxGuestAdditions
		mount -o ro /dev/cdrom /media/VirtualBoxGuestAdditions || \
			mount -o remount,ro /dev/cdrom /media/VirtualBoxGuestAdditions
		cd /media/VirtualBoxGuestAdditions
		./VBoxLinuxAdditions.run
		exit $?
		;;
	*)
		echo "unsupported distro $DISTRO" 1>&2
		exit 1
		;;
esac