Hi, people. 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:
#!/usr/bin/Rscript options(echo=TRUE) a <- 1 Sys.sleep(3) 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 command: (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: Version: platform = x86_64-unknown-linux-gnu arch = x86_64 os = linux-gnu system = x86_64, linux-gnu status = 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) Locale: LC_CTYPE=fr_CA.UTF-8;LC_NUMERIC=C;LC_TIME=fr_CA.UTF-8;LC_COLLATE=fr_CA.UTF-8;LC_MONETARY=fr_CA.UTF-8;LC_MESSAGES=fr_CA.UTF-8;LC_PAPER=fr_CA.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=fr_CA.UTF-8;LC_IDENTIFICATION=C Search Path: .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 ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
