Ubuntu Kernel Cleanup

clean-kernels.sh

#/bin/bash
# Removes kernels + headers remaining on a ubuntu machine.

current_version=$(uname -a |awk '{print substr($3, 1, length($3)-length("-generic"));}')

echo "Current Kernel: $current_version"

installed=$(dpkg-query -l | grep '^ii' | awk '{print $2}')
headers=$(grep linux-headers- <<<"$installed" |head -n -3 |grep -v "$current_version")
modules=$(grep linux-modules <<<"$installed" |grep -v "extra" |head -n -2 |grep -v "$current_version")
extras=$(grep linux-modules-extra <<<"$installed" |head -n -2 |grep -v "$current_version")

echo "Removing"
echo $headers $modules $extras

set -xe
echo $headers $modules $extras | xargs sudo aptitude purge -y