Re: "Leaving" a connection open / Sessions

On 13 Sep 2006 21:43:13 -0500, Todd H. <comphelp@xxxxxxxxx> wrote:
sgb1010@xxxxxxxxxxx writes:

Greetings!

Is there a way to leave a connection open in SSH, something as a
'session' which can be restored later?

I think you're about to fall in love with Gnu screen.

I second the recomendation, I have used it for years and love it.

i

My scenario is the following: I connect to a remote machine (which has
sshd) via SSH, run octave, run a long script (which will probably take
about a month to complete), hit Ctrl+Z, type BG. So far so good, my
application goes to background.

What I would like to do next would be to log out of this ssh connection
and, when I return (with the same user), be able to fg %1 and return to
the running program. Right now when I try to do this I get a message
saying I can't, because there are jobs running on the background.

Is there a way to accomplish this? Some configuration in sshd perhaps?
I wouldn't like to have to leave two machines turned on whereas one
would suffice.

ssh blah@remotehost
remotehost$ screen

[hit enter after swcreen's introductory comments]

remotehostinscreen$ . .bash_profile (if ya need to, screen doesn't always
fork as a login shell, so you may need to source this)

remotehostinscreen$ myfunprocess&
remotehostinscreen$ [Ctrl-a d]
[detached]

remotehost$ exit



Days later, from some completely different machine, reconnect to
remotehost via any method.

remotehost$ screen -r
remotehostinscreen$

you'll be right back where you were.

Think of screen as VNC for tty's. -r reconnects you. Ctrl-a
followed by d disconnects you. Or hell ust kill the terminal.
Screen is still there.


Enjoy! Screen rocks.


.

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