DESCRIPTION
passwd contains for each user the following information:
name (login name)password numerical user IDdefault working directory program to use as Shell This is an ASCII file. Each field within each a user'sentry is separated from the next by a colon. Each user is separated from the next by a new--line. If the passwordfield is null, no password is demanded; if the Shell field is null, the Shell itself is used.
This file, naturally, is inaccessible to anyone but thesuper--user.