$ dpkg -l | awk '/^rc/{print $2}' |  sudo xargs dpkg -P
(Reading database ... 461838 files and directories currently installed.)
Removing libcuda1-304 (304.117-0ubuntu1) ...
Purging configuration files for libcuda1-304 (304.117-0ubuntu1) ...
Removing libx264-123:amd64 (2:0.123.2189+git35cf912-1ubuntu4) ...
Purging configuration files for libx264-123:amd64 (2:0.123.2189+git35cf912-1ubuntu4) ...
Removing linux-image-3.13.0-18-generic (3.13.0-18.38) ...
Purging configuration files for linux-image-3.13.0-18-generic (3.13.0-18.38) ...
Examining /etc/kernel/postrm.d .
run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.13.0-18-generic /boot/vmlinuz-3.13.0-18-generic
run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.13.0-18-generic /boot/vmlinuz-3.13.0-18-generic
Removing linux-image-extra-3.13.0-18-generic (3.13.0-18.38) ...
Purging configuration files for linux-image-extra-3.13.0-18-generic (3.13.0-18.38) ...
Examining /etc/kernel/postrm.d .
run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.13.0-18-generic /boot/vmlinuz-3.13.0-18-generic
run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.13.0-18-generic /boot/vmlinuz-3.13.0-18-generic
Removing linux-signed-image-3.13.0-18-generic (3.13.0-18.38) ...
Purging configuration files for linux-signed-image-3.13.0-18-generic (3.13.0-18.38) ...
Removing nautilus-dropbox (1.6.1-1) ...
Purging configuration files for nautilus-dropbox (1.6.1-1) ...
Removing nvidia-304 (304.117-0ubuntu1) ...
Purging configuration files for nvidia-304 (304.117-0ubuntu1) ...
update-initramfs: deferring update (trigger activated)
Removing nvidia-libopencl1-304 (304.117-0ubuntu1) ...
Purging configuration files for nvidia-libopencl1-304 (304.117-0ubuntu1) ...
Removing nvidia-opencl-icd-304 (304.117-0ubuntu1) ...
Purging configuration files for nvidia-opencl-icd-304 (304.117-0ubuntu1) ...
Removing skype-bin (4.2.0.11-0ubuntu0.12.04.2) ...
Purging configuration files for skype-bin (4.2.0.11-0ubuntu0.12.04.2) ...
Processing triggers for initramfs-tools (0.103ubuntu4.2) ...
update-initramfs: Generating /boot/initrd.img-3.13.0-32-generic