apt-get remove --purge $(dpkg -l | tail -n +6 | grep -E 'linux-image-[0-9]+' | grep -Fv $(uname -r) |awk '{print $2}')
apt-get remove --purge $(dpkg -l | tail -n +6 | grep -E 'linux-image-extra-[0-9]+' | grep -Fv $(uname -r) |awk '{print $2}')
### Bash script
#!bin/bash