Python script to check for files in users PATH that conflict or override with system binaries.

check_system_binary_overrides.py

#!/usr/bin/python
# -*- coding: utf-8 -*-

import os
import glob

path_string = os.environ['PATH']
paths = path_string.split(":")

system_paths = ['/usr/bin','/bin','/usr/sbin','/sbin']
system_files = {}

# Build list of files in system path
for system_path in system_paths:
	for file in glob.glob(os.path.join(system_path,'*')):
		if os.path.basename(file) not in system_files.keys():
			system_files[os.path.basename(file)] = []
		system_files[os.path.basename(file)].append(file)

# Check user paths for conflicts with system paths    
for path in paths:
	if path in system_paths:
		continue # skip system paths
	else:
		print("Checking non-system path: %s" % path)
		for file in glob.glob(os.path.join(path,'*')):
			if os.path.basename(file) in system_files.keys():
				print("Conflict! %s -VS- %s" % (file,system_files[os.path.basename(file)]))