ii  linux-headers-3.13.0-19                               3.13.0-19.40                                        all          Header files related to Linux kernel version 3.13.0
ii  linux-headers-3.13.0-19-generic                       3.13.0-19.40                                        amd64        Linux kernel headers for version 3.13.0 on 64 bit x86 SMP
ii  linux-headers-3.13.0-20                               3.13.0-20.42                                        all          Header files related to Linux kernel version 3.13.0
ii  linux-headers-3.13.0-20-generic                       3.13.0-20.42                                        amd64        Linux kernel headers for version 3.13.0 on 64 bit x86 SMP
ii  linux-headers-3.13.0-21                               3.13.0-21.43                                        all          Header files related to Linux kernel version 3.13.0
ii  linux-headers-3.13.0-21-generic                       3.13.0-21.43                                        amd64        Linux kernel headers for version 3.13.0 on 64 bit x86 SMP
ii  linux-headers-generic                                 3.13.0.21.25                                        amd64        Generic Linux kernel headers
ii  unity-scope-virtualbox                                0.1+13.10.20130723-0ubuntu1                         all          VirtualBox scope for Unity
ii  virtualbox                                            4.3.6-dfsg-2                                        amd64        x86 virtualization solution - base binaries
ii  virtualbox-dkms                                       4.3.6-dfsg-2                                        all          x86 virtualization solution - kernel module sources for dkms
ii  virtualbox-qt                                         4.3.6-dfsg-2                                        amd64        x86 virtualization solution - Qt based user interface