A script to remove old kernels in ubuntu

removeoldkernels

#!/bin/bash

kernelversion=$(uname -r)
kernelminversion=${kernelversion%-*}
latestkernelversion=$(dpkg -l | awk '/linux-image-[0-9]/ {print $2}' | sort | tail -1 | grep -o '[0-9][0-9\.-]*[0-9]')

packages_to_remove=$(dpkg -l | awk '/linux-(image|headers)-[0-9]/ {print $2}' | egrep -v "${kernelminversion}|${latestkernelversion}")

[[ -z "${packages_to_remove}" ]] || dpkg -P ${packages_to_remove}