[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: screen's console

From: Phil!Gregory
Subject: Re: screen's console
Date: Tue, 20 Jul 2004 00:21:57 -0400
User-agent: Mutt/

* Zenaan Harkness <address@hidden> [2004-07-20 09:07 +1000]:
> Is it possible to have screen start similarly on a Linux console
> "terminal", without first having to log in?

Not without some hackery.

The most important thing about the login process is telling the system who
you are.  (Generally, you have to prove your identity with a password,
too.)  When you start things from xterms, you've already identified
yourself before you started X (either you logged in via XDM or you logged
into the console and started X from there).  When you're on a fresh
console, the system doesn't know who you are, so it doesn't know who to
run programs as.

As I indicated, you could hack around this by writing a script that 'su'ed
to the appropriate user and ran screen, and then running the script from
init.  I don't think the benefits would be all that great compared to the
work to implement it.

Note that "login shells" are slightly different.  A login shell doesn't do
any of the identification or authentication that the system requires; by
the time you get to a shell, all of that's been done already.  It just
happens that it's often convenient to only do some things immediately
after you log in to a system, and not if you start a shell after that
(say, by calling an xterm).  The original meaning of a login shell was
just a way to tell the shell "Hey, I've just logged in; do some extra
stuff for me."

-- contrarian of the first order... /
PGP: 026A27F2  print: D200 5BDB FC4B B24A 9248  9F7A 4322 2D22 026A 27F2
--- --
Here.  I found it.  I knew it was going to be in the last place I looked
for it, so I looked there first.
                       -- Delirium, on finding things.  ("Brief Lives",
                          Neil Gaiman)
---- --- --

reply via email to

[Prev in Thread] Current Thread [Next in Thread]