Date: Tue, 2 Sep 1997 08:42:22 -0400 (EDT) From: "Adrian T. Filipi-Martin" <atf3r@cs.virginia.edu> To: "Riley J. McIntire" <chaos@tgci.com> Cc: freebsd-questions@freebsd.org Subject: Re: the signature Message-ID: <Pine.SUN.3.90.970902081834.7226A-100000@stretch.cs.Virginia.edu> In-Reply-To: <199709012020.NAA18094@train.tgci.com>
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On Mon, 1 Sep 1997, Riley J. McIntire wrote:
> > Date: Mon, 1 Sep 1997 15:06:40 -0400 (EDT)
> > From: "Adrian T. Filipi-Martin" <atf3r@cs.virginia.edu>
>
> [snip]
> >
> > Here's what I use to dial-up and connect. I had to su to cat it
> > because it is read protected for the obvious reaons. Replace the stuff
> > in {}'s with your site specific values.
> >
> > > : adrian@lorax; su root -c "cat /etc/ppp/chat"
>
> Out of curiosity what is the "-c" option? Does it mean "run the
> command [and exit]" ? It doesn't seem to be documented under "man
> su". Is it documented elsewhere?
Yes, it is just like the '-c' option for sh. Instead of starting
an interactive shell, the argument is passed to the shell for execution.
I just double checked the su manpage and found this. Aparently
all non-su args are simply passed to the su'd shell, so you need to look
at the sh man page for an explination of the '-c' flag. Unfortunately,
there is no mention of the '-c' flag on the sh man page.
> If the optional args are provided on the command line, they are passed to
> the login shell of the target login. This allows it to pass arbitrary
> commands via the -c option as understood by most shells. Note that -c
> usually expects a single argument only; you have to quote it when passing
> multiple words.
cheers,
Adrian
--
adrian@virginia.edu ---->>>>| If I were stranded on a desert island, and
System Administrator --->>>| I could only have one OS for my computer,
Neurosurgical Visualzation Lab -->>| it would be FreeBSD. Think about it.....
http://www.nvl.virginia.edu/ ->| http://www.freebsd.org/
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