#!/bin/bash -e
# Fuente: stack algo (ya ni me acuerdo)...
uname -a
IN_USE=$(uname -a | awk '{ print $3 }')
echo "Your in use kernel is $IN_USE"
OLD_KERNELS=$(
dpkg --get-selections |
grep -v "linux-headers-generic" |
grep -v "linux-image-generic" |
grep -v "linux-image-generic" |
grep -v "${IN_USE%%-generic}" |
grep -Ei 'linux-image|linux-headers|linux-modules' |
awk '{ print $1 }'
)
echo "Old Kernels to be removed:"
echo "$OLD_KERNELS"
OLD_MODULES=$(
ls /lib/modules |
grep -v "${IN_USE%%-generic}" |
grep -v "${IN_USE}"
)
echo "Old Modules to be removed:"
echo "$OLD_MODULES"
if [ "$1" == "exec" ]; then
apt-get purge $OLD_KERNELS
for module in $OLD_MODULES ; do
rm -rf /lib/modules/$module/
done
fi# Guardar script como rm-old-kernels.sh
chmod +x rm-old-kernels.sh
# Para conocer lo que se podría eliminar
./rm-old-kernels.sh
# Salida (en mi caso)
# (output de uname -a)
# Your in use kernel is 6.9.1-060901-generic
# Old Kernels to be removed:
# linux-headers-5.15.0-105-generic
# linux-image-5.15.0-105-generic
# linux-modules-5.15.0-105-generic
# linux-modules-extra-5.15.0-105-generic
# Old Modules to be removed:
# 5.15.0-105-generic
# Luego ya pueden proceder con la eliminación
sudo ./rm-old-kernels.sh exec
# Por si quieren leer sobre reboot
man reboot
# ojo: reboot -h reinica la máquina :facepalm
# Finalmente reiniciamos
reboot