#!/usr/bin/python
import argparse
import os


parser = argparse.ArgumentParser()
parser.add_argument('searchterm', default='', nargs='?')
parser.add_argument('--sort', action='store_true', default=False,
                    help='Print PATH in a sorted form')

args = parser.parse_args()

path = os.getenv('PATH').split(';')

if args.sort:
    path = sorted(path)

if args.searchterm:
    needle = args.searchterm.lower()
    print(f"\nSearching PATH for {needle}")

    matches = []
    for p in path:
        if needle in p.lower():
            matches.append(p)

    if matches:
        print(f"Found {len(matches)} result{'' if len(matches) == 1 else 's'}")
        for m in matches:
            print(m)
    else:
        print(f"Unable to find {needle} in PATH")
else:
    print("\nShowing PATH:\n")
    for p in path:
        print(p)