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From: louie@sayshell.umd.edu (Louis A. Mamakos)
Newsgroups: comp.unix.wizards
Subject: Re: time dependent login
Message-ID: <1990Jun2.033752.20416@haven.umd.edu>
Date: 2 Jun 90 03:37:52 GMT
References: <979@sixhub.UUCP> <1990May28.200520.20288@cbnews.att.com> <1990May29.194446.12623@cbnewsh.att.com> <1990May31.172936.10030@cbnews.att.com>
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In article <1990May31.172936.10030@cbnews.att.com> res@cbnews.att.com (Robert E. Stampfli) writes:
>
>Why *not* modify the password file?  To turn an account "xyz" off:

>/bin/echo '/^xyz:/s/:/:NOLOG/\nw' | /bin/ed /etc/passwd


What happens if someone else is trying to modify the password file
(changing their password, adding a user, etc)?  Someone's going to
lose.  You'll have to obey whatever locking convention is used on your
particular platform to arbitrate access to /etc/passwd to make this
work reliably.

louie