root@stealth:~# apt-get purge --auto-remove linux-image-extra-4.4.0-45-generic linux-image-extra-4.4.0-47-generic linux-image-extra-4.4.0-57-generic
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
linux-image-4.4.0-45-generic* linux-image-4.4.0-47-generic*
linux-image-4.4.0-57-generic* linux-image-extra-4.4.0-45-generic
linux-image-extra-4.4.0-47-generic linux-image-extra-4.4.0-57-generic
0 upgraded, 0 newly installed, 6 to remove and 290 not upgraded.
3 not fully installed or removed.
After this operation, 655 MB disk space will be freed.
Do you want to continue? [Y/n]