Small script to check what kernels are installed with a note on how to remove unwanted ones.

check_kernels.sh

#!/bin/bash
clear
echo "##################"
echo "# CURRENT KERNEL #"
echo "##################"
echo ""
uname -r
echo ""
echo "######################"
echo "# INSTRALLED KERNELS #"
echo "######################"
echo ""
dpkg --list | grep linux-image | awk '{print $2}'
echo ""
echo "######################"
echo "# INSTRALLED HEADERS #"
echo "######################"
echo ""
dpkg --list | grep linux-headers | awk '{print $2}'
echo ""
echo "Remove unwated kernels with:"
echo "  sudo apt autoremove"
echo "  sudo apt-get purge linux-image-x..."