-----------------------------
install VirtualBox Guest Additions
-----------------------------
in virtualbox, e.g. fedora24
dnf upgrade
init 6
dnf install kernel-headers-$(uname -r)
dnf install kernel-devel
-----------------------------
-----------------------------
install VirtualBox Guest Additions
-----------------------------
in virtualbox, e.g. fedora24
dnf upgrade
init 6
dnf install kernel-headers-$(uname -r)
dnf install kernel-devel
-----------------------------