[R] R CMD BATCH *without* saving output

William Dunlap wdunlap at tibco.com
Thu Jul 24 19:42:48 CEST 2014


You also might try wrapping the call to the scripts with capture.output().
Bill Dunlap
TIBCO Software
wdunlap tibco.com


On Thu, Jul 24, 2014 at 9:54 AM, Nick Matzke <matzke at berkeley.edu> wrote:
> Actually, this was the full solution:
>
> At the beginning of the script:
>
> # Suppressing all output/warnings/try errors:
> # Open connection to black hole
> con=file(open="/dev/null")
> # Don't print anything to screen
> sink(file=con, type="output")
> # Don't print messages (e.g. errors/warnings)
> sink(file=con, type="message")
>
>
> At the end of the script:
>
> # Turn off output sink
> sink()
> # Turn off message sink
> sink(type="message")
> # Close connection to black hole
> close(con)
>
>
>
>
> On Thu, Jul 24, 2014 at 12:27 PM, Nick Matzke <matzke at berkeley.edu> wrote:
>
>>
>> On Thu, Jul 24, 2014 at 12:16 PM, Nick Matzke <matzke at nimbios.org> wrote:
>>
>>> Hi all,
>>>
>>> Hi have a series of scripts that print a lot of notes etc. to screen.  I
>>> have to run them on a massive set of input files. The scripts are
>>> self-contained and save the important output to data files in an organized
>>> way.  I don't need the screen output for anything.
>>>
>>> Problems:
>>>
>>> - If I run the script from the R command line, the output printed to
>>> Terminal got so huge that it crashed Terminal (I was running 10 of these at
>>> once)
>>>
>>>  - I tried R CMD BATCH, but this just created .Rout files that are size
>>> 50 GB and counting.
>>>
>>> I suppose I could be a grownup and refactor all my code with print
>>> options that I can turn off, but I would rather be lazy.
>>>
>>> So, is there a way to run R CMD BATCH or something similar, and NOT print
>>> the output to screen or to the .Rout file?
>>>
>>> I tried:
>>>
>>> R CMD BATCH --no-save , but that still seems to save the the screen
>>> output etc. to .Rout.
>>>
>>> Thanks,
>>> Nick
>>>
>>
>>
>> Here is one likely solution to the above question (also, I am now sending
>> from the email address that is subscribed to R-help):
>>
>> Put:
>> sink("/dev/null")
>>
>> ...at the beginning of the script. All screen output now goes to the black
>> hole of /dev/null and is not saved.
>>
>> At the end of the script, put
>> sink()
>>
>> ...to turn this behavior off.
>>
>> (Tip courtesy of Brian O'Meara)
>>
>> There may be even easier solutions, if so, I'm still interested, since I
>> couldn't find anything obvious googling R CMD BATCH (although this function
>> seems to have many options not listed in the help for R CMD BATCH).
>>
>> Thanks,
>> Nick
>>
>
>         [[alternative HTML version deleted]]
>
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