remove-unneeded-kernels.fish

remove-unneeded-kernels.fish

#!/usr/bin/env fish

# Remove kernels older than the latest, but excluding the one currently booted
# from.

## This is ideal for when you've managed to fill your boot partition and can't
## finish an `apt upgrade`

set current_version (uname -r)
set top_version (dpkg --get-selections | grep install | awk '{print $1}' | egrep '^linux-image-[0-9].*$' | sort -r | head -n 1)

set to_remove (dpkg --get-selections | grep install | awk '{print $1}' | egrep '^linux-image-[0-9].*$' | grep -v $current_version | grep -v $top_version)

apt purge $to_remove