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Re: Locking screen
Dan Mahoney, System Admin
Re: Locking screen
Tue, 28 Jun 2005 05:51:24 -0400 (EDT)
On Mon, 27 Jun 2005, Will Maier wrote:
Well, again, the thought of using /bin/true as a "locker" comes up (this
is settable as an an environment variable, $LOCKPRG, but apparently not
as a builtin, that way there would be only one prompt.
The unusual thing that the manpage mentions is that apparently a builtin
will be used if lock cannot be found. I think this is the case under
FreeBSD, as nothing like "lock" shows in PS while the screen is locked,
and the prompts output by "lock" don't match the ones I see in screen.
Anyway, yes I could modify a screen locker util to read my password from
.screenrc. This is ONE of two problems I am trying to address.
1) The double password issue. Annoying, but no risk.
2) On failure to enter the "screen password", the system drops you *BACK
AT A PROMPT*, now, given at this point someone's already proved they know
my login password here, so I mean it's not a sign of weakness, but how
hard would it be to have screen JUST KEEP PROMPTING, FOREVER.
Note, #2 is only a problem because of the thought of setting LOCKPRG to
true or something to fix problem #1.
I guess it's a bit of a misnomer that I'm not unlocking an attached
session, I'm actually unlocking screen which will then restore a detached
session on its own and failing that, drop me at a prompt.
I guess what would be neatest is some sort of "kill parent shell on exit"
On Mon, Jun 27, 2005 at 08:25:01PM -0400, Dan Mahoney, System Admin wrote:
It was my assumption that the "password" is not called on an unlock, just
on a reattach. Is there a way to have it use a single password? (I don't
care if there are two different passwords, one for unlock and one for
It seems that screen considers these events one and the same -- the manual on
"Meanwhile processes in the windows may continue, as the windows are in the
A locked screen is, essentially, a detached screen, hence the double prompt.
That said, could you not write/modify a screen locker to read the crypted
password in your screenrc (instead of /etc/passwd)? This would mean one password
(although there still would be two prompts).
"This Is Not Goodbye!"
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