[R] R and unix tool 'screen'

[Giampiero Salvi]

Hi,

On Wed, 28 Jan 2004, Prof Brian Ripley wrote:

> C-a is not a `signal' but a normal key sequence, and one used by
> readline.  However,

Sorry for the wrong terminology.

I tried it again and it works now (even with readline, on RH9.0).
The only way I can explain the problem I got yesterday is that the
computer reacted very slowly (possibly for high load). Strangely
enough, I had tried it on four different computers with the same
result...

Thank you for your help.
Giampiero

>
> screen R
> ctrl-a d
> [detached]
> screen -r
>
> works for me apart from not having the usual meaning of crtl-a.  I don't
> think R is doing anything special, but some versions of readline could
> conceivably be.
>
> I used RH8.0 Linux for this test.  I would suggest trying R --no-readline
> in case your version of readline is setting the terminal in a way that
> conflicts with your version of `screen'.
>
> On Tue, 27 Jan 2004, Giampiero Salvi wrote:
>
> > I have problems running R with screen. For those who don't know,
> > screen is a unix tool that is quite handy if you want to leave
> > a process (that outputs to tty) running when you logout, and
> > then recover the session later on.
> >
> > It works like this:
> > 1) run 'screen': you get a normal prompt as if you were in a normal
> > shell.
> > 2) run whatever command you like
> > 3) press 'C-a d' to detach the session. Now you can logoff if you like
> > 4) when you want to recover the session type 'screen -r'
> >
> > The problem is that R seems to catch the 'C-a' signal, and nothing happens.
> > Since there is no way to detach the screen, there is no use to it either.
> >
> > Is there a way around this problem?
> >
> > Giampiero
> > _________________________________________________________
> > Giampiero Salvi, M.Sc.          www.speech.kth.se/~giampi
> > Speech, Music and Hearing       Tel:      +46-8-790 75 62
> > Royal Institute of Technology   Fax:      +46-8-790 78 54
> > Drottning Kristinasv. 31,  SE-100 44,  Stockholm,  Sweden
> >
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>
> --
> Brian D. Ripley,                  ripley at stats.ox.ac.uk
> Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
> University of Oxford,             Tel:  +44 1865 272861 (self)
> 1 South Parks Road,                     +44 1865 272866 (PA)
> Oxford OX1 3TG, UK                Fax:  +44 1865 272595
>
>