apt remove --purge
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
  linux-image-extra-3.19.0-25-generic linux-image-extra-3.19.0-39-generic
0 upgraded, 0 newly installed, 2 to remove and 5 not upgraded.
6 not fully installed or removed.
After this operation, 320 MB disk space will be freed.
Do you want to continue? [Y/n]
FATAL -> Failed to fork.