[R] R 2.5.1 - Rscript through tee
pinard at iro.umontreal.ca
Mon Aug 27 04:47:18 CEST 2007
I met a little problem for which someone might have a solution. Let's
say I have an executable file (named "pp.R") with this contents:
a <- 1
a <- 2
If I execute "./pp.R" at the shell prompt, the output shows the timely
progress of the script as expected. If I use "./pp.R | tee OUT"
instead, the output seems buffered and I see it all at once at the end.
The problem does not come from the "tee" program, as if I use this
(echo a; sleep 5; echo b) | tee OUT
the output is timely, not batched.
So, is there a way to tell R (or Rscript) that standard output should be
unbuffered, even if it is not directly connected to a terminal?
In case useful, here is local R information:
platform = x86_64-unknown-linux-gnu
arch = x86_64
os = linux-gnu
system = x86_64, linux-gnu
major = 2
minor = 5.1
year = 2007
month = 06
day = 27
svn rev = 42083
language = R
version.string = R version 2.5.1 (2007-06-27)
.GlobalEnv, package:stats, package:utils, package:datasets, fp.etc, package:graphics, package:grDevices, package:methods, Autoloads, package:base
François Pinard http://pinard.progiciels-bpi.ca
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