So I have a semi-answer for myself. I don't think this way is preferable, but if you're going through the same thing as me, maybe it'll help.
If you pass your desired outfile as an argument in '--args filename', you can redirect the output the following way: cmd_args = commandArgs() print (cmd_args) #To figure out which number argument your outfile is sink(cmd_args[2], append=TRUE) #Or whatever number argument your filename is | | code | | sink() #at the end of your script Stderr I think still gets directed to your outfile location in the R CMD BATCH... command (see start of thread), but Stdout should now go to wherever you directed it with sink, plus, now you can append. HTH (and if you're aware of a better way, please let me know!) ~Michael Turchin Children's Hospital Boston The Broad Institute ________________________________________ From: r-help-boun...@r-project.org [r-help-boun...@r-project.org] On Behalf Of Turchin, Michael [michael.turc...@childrens.harvard.edu] Sent: Thursday, March 11, 2010 5:27 PM To: r-help@r-project.org Subject: [R] Append to outfile in R CMD BATCH mode Is there a way to append to the outfile when using R CMD BATCH? My code, right now, is: R CMD BATCH --slave --vanilla '--args place .2 -.1 .9 .6' StratificationSimulation example.output Everything else is working the way I'd like it. The first few lines of code of my script file are: options(echo=FALSE) cmd_args = commandArgs() print (cmd_args) #d <- read.table("/dev/stdin") if that helps any. However, I cannot currently change the output to append, rather than override, the designated outfile. Maybe I could potentially use sink(__, append=TRUE) if I could somehow reference the outfile from within the script (and assuming my understanding of sink() is correct)? Any thoughts, or help? They're all greatly appreciated. Thanks! ~Michael Children's Hospital Boston The Broad Institute ______________________________________________ R-help@r-project.org 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. ______________________________________________ R-help@r-project.org 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.