ii  linux-image-3.13.0-68-generic                         3.13.0-68.111                                               amd64        Linux kernel image for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-4.2.4-040204-generic                      4.2.4-040204.201510261009                                   amd64        Linux kernel image for version 4.2.4 on 64 bit x86 SMP
ii  linux-image-extra-3.13.0-68-generic                   3.13.0-68.111                                               amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-generic                                   3.13.0.68.74                                                amd64        Generic Linux kernel image