apt-autoremove-kernel

#!/bin/bash

PKGFILE=/tmp/kernelpurge.$$

true > $PKGFILE
dpkg --get-selections | awk '$2 !~ /^install/ { next } $1 ~ /^linux-image-[0-9]/ { print $1 }' | head -n -1 | fgrep -v "$(uname -r)" >> $PKGFILE
dpkg --get-selections | awk '$2 !~ /^install/ { next } $1 ~ /^linux-image-extra-[0-9]/ { print $1 }' | head -n -1 | fgrep -v "$(uname -r)" | tac >> $PKGFILE
dpkg --get-selections | awk '$2 !~ /^install/ { next } $1 ~ /^linux-headers-[0-9]/ { print $1 }' | head -n -1 | fgrep -v "$(uname -r)" | tac >> $PKGFILE

lines=$(cat $PKGFILE | wc -l)

if [ $lines -eq 0 ] ; then
    exit 0
fi

dpkg -P $(cat $PKGFILE) | tee /var/log/kernelpurge-$(date +%F).log
apt-get -f -o Dpkg::Options::=--force-confold install || exit 1 

rm -f $PKGFILE