#!/usr/bin/python
from sys import argv 
from string import *
iddict = { }

infile = '/etc/passwd' 
if len(argv) > 1:
	infile = argv[1]
fin = open(infile, 'r')
for line in fin.readlines(): 
	line = lstrip(line) 
	if line == '' or line[0] == '#':
		continue

	parts = split(line, ':') 
	userid = strip(parts[0]) 
	name = strip(parts[4])

	compos = find(name, ',') 
	if compos != -1:
		name = name[0:compos]

	if name == '' or name == userid: 
		name = '[ none ]'

	iddict[userid] = name

ids = iddict.keys() 
ids.sort() 
for userid in ids:
	human = iddict[userid]

	if len(userid) < 12: 
		userid = userid + ' ' * (12 - len(userid))

	print userid + human