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Re: Why do system users have shells?

On Mon, 25 Nov 2002 22:34, H. S. Teoh wrote:
> > > Possibly because otherwise, you cannot run any shell scripts as that
> > > user. (This may also apply to more than shell scripts, but I'm not sure
> > > about that.)
> >
> > sudo, start-stop-daemon, su -s
> >
> > Why can't people read man pages before replying?
> [snip]
> But there are programs that don't use su -s. E.g., custom logins
> (non-anonymous) from wu-ftpd will fail if the login shell is set to
> /bin/false. This, of course, is probably a bug, but I suspect a lot of
> things will break if (some) system users have no shell.

Try it out.

You'll find that very little breaks, and most of that can be fixed by a few 
one-line changes to scripts.

http://www.coker.com.au/selinux/   My NSA Security Enhanced Linux packages
http://www.coker.com.au/bonnie++/  Bonnie++ hard drive benchmark
http://www.coker.com.au/postal/    Postal SMTP/POP benchmark
http://www.coker.com.au/~russell/  My home page

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