$ dpkg -l | awk '$1 ~ /linux-image/ {print$2}' | xargs sudo apt-get -y purge
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  wireless-regdb nvidia-settings-319 crda
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.