1.9.1-alpha & tty

I have two versions of R on my Debian testing: R-1.9.0 (precompiled) and
R-1.9.1-alpha of 2004-06-07 (built on my system). In the latter, I get
system("emacs sim.R &")
emacs: standard input is not a tty
while with R-1.9.0 it works as expected. I have absolutely no idea about
what's going on, so I could use some help. Anyone?

Thanks,

G?ran
G?ran Brostr?m                    tel: +46 90 786 5223
 Department of Statistics          fax: +46 90 786 6614
 Ume? University                   http://www.stat.umu.se/egna/gb/
 SE-90187 Ume?, Sweden             e-mail: gb@stat.umu.se
I have two versions of R on my Debian testing: R-1.9.0 (precompiled) and
R-1.9.1-alpha of 2004-06-07 (built on my system). In the latter, I get

system("emacs sim.R &")
emacs: standard input is not a tty
while with R-1.9.0 it works as expected. I have absolutely no idea about
what's going on, so I could use some help. Anyone?
I just recalled that I was running R-1.9.1 as root ("su -; R") in order to
be able to 'install.packages'. That must be the reason, but I still don't
understand what it means.

G?ran

On Wed, Jun 09, 2004 at 01:23:49PM +0200, G?ran Brostr?m wrote:
I have two versions of R on my Debian testing: R-1.9.0 (precompiled) and
R-1.9.1-alpha of 2004-06-07 (built on my system). In the latter, I get

system("emacs sim.R &")
emacs: standard input is not a tty
while with R-1.9.0 it works as expected. I have absolutely no idea about
what's going on, so I could use some help. Anyone?
I just recalled that I was running R-1.9.1 as root ("su -; R") in order to
be able to 'install.packages'. That must be the reason, but I still don't
understand what it means.
It means the shell you are running it from is not an interactive shell
connected to a terminal, which is true as it is launched from R.  You are
trying to run a detached session with '&': that does not work for me in
1.9.0 without su -.
system("emacs &")
emacs: standard input is not a tty
as I would expect.
Brian D. Ripley,                  ripley@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
Prof Brian Ripley <ripley@stats.ox.ac.uk> writes:
On Wed, 9 Jun 2004, G?ran Brostr?m wrote:

On Wed, Jun 09, 2004 at 01:23:49PM +0200, G?ran Brostr?m wrote:
I have two versions of R on my Debian testing: R-1.9.0 (precompiled) and
R-1.9.1-alpha of 2004-06-07 (built on my system). In the latter, I get

system("emacs sim.R &")
emacs: standard input is not a tty
while with R-1.9.0 it works as expected. I have absolutely no idea about
what's going on, so I could use some help. Anyone?
I just recalled that I was running R-1.9.1 as root ("su -; R") in order to
be able to 'install.packages'. That must be the reason, but I still don't
understand what it means.
It means the shell you are running it from is not an interactive shell
connected to a terminal, which is true as it is launched from R.  You are
trying to run a detached session with '&': that does not work for me in
1.9.0 without su -.

system("emacs &")
emacs: standard input is not a tty
as I would expect.
It's probably a matter of whether DISPLAY is set:
 system("emacs sim.R &") # works
 system("DISPLAY= emacs sim.R &")
emacs: standard input is not a tty
(Redhat 8)

"su -" will usually not set DISPLAY since root might not have
credentials to write to the display (which might be on a completely
unrelated system).
O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)             FAX: (+45) 35327907
To answer a completely different question than the one you pose, an
alternative strategy for Debian's default system install is to give
ownership of /usr/local/lib/R/site-packages to a group and make it
group writable, granting membership to those who are allowed to
install packages. 

G?ran Brostr?m <gb@stat.umu.se> writes:
On Wed, Jun 09, 2004 at 01:23:49PM +0200, G?ran Brostr?m wrote:
I have two versions of R on my Debian testing: R-1.9.0 (precompiled) and
R-1.9.1-alpha of 2004-06-07 (built on my system). In the latter, I get

system("emacs sim.R &")
emacs: standard input is not a tty
while with R-1.9.0 it works as expected. I have absolutely no idea about
what's going on, so I could use some help. Anyone?
I just recalled that I was running R-1.9.1 as root ("su -; R") in order to
be able to 'install.packages'. That must be the reason, but I still don't
understand what it means.

G?ran

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