cleankernel

#!/usr/bin/env python

# Cleankernel 0.1 - display a list of files and directories that belong
# to old unused kernels
#
# Copyright 2008 Erik Hahn
#
# WARNING: Don't trust this script, always check it's output before 
# you delete anything.

import os
from os import path

# Build the list of kernels to be kept
os.chdir("/boot")

keep = [ s.replace("vmlinuz-","") for s in [
    path.basename(path.realpath("vmlinuz")),
    path.basename(path.realpath("vmlinuz.old")),
    path.basename(path.realpath("vmlinuz.boots"))
    ]
]

# Create the list of vmlinuz/System.map/config files in /boot to be kept
keep_in_boot=[]

for f in os.listdir("."):
    for k in keep:
        if f.count(k) != 0:
            keep_in_boot.append(f)

for f in os.listdir("."):
    if not keep_in_boot.count(f) and (f.count("vmlinuz-") or
            f.count("config-") or f.count("System.map-")):
        print path.realpath(f)

# Purge old module dirs
keep = [ s.replace("-dirty","") for s in keep ]

os.chdir("/lib/modules")
for d in os.listdir("."):
    if not keep.count(d):
        print path.realpath(d)