Search a file from environment PATH

findinpath.py

#!/usr/bin/env python
# -*- encoding: utf-8 -*-

import os
import sys
import os.path

path_dirs = os.getenv('PATH').split(':')
cmd = sys.argv[1]

found_in_dirs = []

print "Path:\n\t%s" % "\n\t".join(path_dirs)

for path_dir in path_dirs:
    for files in os.listdir(path_dir):
        if cmd == files:
            if path_dir not in found_in_dirs:
                found_in_dirs.append(path_dir)

if len(found_in_dirs):
    print "\nCommand '%s' found in:\n\t%s" % (cmd, "\n\t".join(found_in_dirs))
else:
    print "\nCommand '%s' not found in path!" % cmd