attaching a terminal to 'join' another?

[Jeremy Gransden]

On 8/2/07, Jim Stapleton <stapleton.41 at gmail.com> wrote:
>
> On 8/2/07, Jeremy Gransden <jeremy.gransden at gmail.com> wrote:
> >
> >
> >
> > On 8/2/07, Jim Stapleton <stapleton.41 at gmail.com> wrote:
> > > Sorry if my question is a bit confusing - I'm not even sure the proper
> > > terminology, so I don't know what the best way to start looking is.
> > >
> > > I'm rebuilding a system at home, and I'd like to check how the build
> > > is going at a slow time at work sometimes. I can connect to the system
> > > from work (ssh into my main box, and then from there, ssh to the
> > > system I'm working on). I have a terminal opened on that system
> > > (actually, another ssh session fron the main box), and I'd like to
> > > have my new connection attach to that terminal session, if possible,
> > > so that I can just pick up where I left off, and monitor it from here.
> > > Is this possible?
> >
> >
> >
> > Maybe your looking for screen.
> >
> > try
> > man screen
> > for more details.
> > thanks,
> > jeremy
> >
>
> I was actually thinking console for that part of the terminology, but
> yeah, that's what I want to attach to, the man page didn't tell me how
> though.
>
> This seemed relevant:
>     Output to a virtual console that not currently is on the display is
> saved
>     in a buffer that holds a "screenfull" (normally 25) lines.  Any output
>     written to /dev/console (the original console device) is echoed to
>     /dev/ttyv0.
>
> However, cat'ing and less'ing the device did nothing, except act as if
> it were waiting for input, and none was coming.
>
> I however did find out which screen I'm on using ps -A and grep:
> sjss at legolas 12:01:15 (0) /ports/java/diablo-jdk15  > ps -A | grep tty
> sjss              0.0   0   0:00.33  0.6  0      0    0 26343 26339
> sshd: sjss at ttyp1 (sshd)
> sjss              0.0   0   0:09.61  0.5  0      0    0 43906 43903
> sshd: sjss at ttyp0 (sshd)
>
> So, I want to see what is going on with ttyp0
> ttyp0
>
> Thanks,
> -Jim Stapleton
>


I guess i was a little vauge..... sorry.

What you will need to do is run the program screen, (sysutils/screen), on
the macine that you will want to monitor, BEFORE you start your processes.
the man page should be able to tell you how to attach/detach from the screen
session. I use this all the time in much the same manner as you are trying.

thanks,
jeremy