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Redirect system2 stdout to a file on windows

5 messages · Jeroen Ooms, Gabor Grothendieck, Henrik Bengtsson

Jeroen Ooms
# 
According to the manual, the `stdout` argument of the `system2`
function can redirect output to a file. This seems to work on unix,
however I can't get it to work on windows. The toy example below, no
`out.txt` or `err.txt` files are created. I tried sending it to an
existing file, or expand the full file path, but with no success:

    setwd(tempdir())
    system2("whoami", stdout="out.txt", stderr="err.txt")
    file.exists("out.txt")

Am I doing something wrong or is this not supported on windows?
Gabor Grothendieck
#
On Sun, Jul 14, 2013 at 1:18 PM, Jeroen Ooms <jeroen.ooms at stat.ucla.edu> wrote:
Try:

out.txt <- normalizePath("./out.txt", mustWork = FALSE)



--
Statistics & Software Consulting
GKX Group, GKX Associates Inc.
tel: 1-877-GKX-GROUP
email: ggrothendieck at gmail.com
Jeroen Ooms
#
On Sun, Jul 14, 2013 at 10:24 PM, Gabor Grothendieck wrote:
Doesn't work either, neither on Win7 nor WinXP.
R version 3.0.1 (2013-05-16)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Gabor Grothendieck
#
On Sun, Jul 14, 2013 at 5:20 PM, Jeroen Ooms <jeroen.ooms at stat.ucla.edu> wrote:
Not sure what happened but I tried it again and it did not work on my
system either.

If a workaround is ok then this works on my system:

shell(paste("whoami", ">", "out.txt"))



--
Statistics & Software Consulting
GKX Group, GKX Associates Inc.
tel: 1-877-GKX-GROUP
email: ggrothendieck at gmail.com
Henrik Bengtsson
# 
Works for me (Win 7 64bit) using R.exe:
[1] "C:/Users/hb/AppData/Local/Temp/RtmpSqjCDt"
[1] 0
size isdir mode               mtime               ctime
out.txt   12 FALSE  666 2013-07-15 00:02:06 2013-07-15 00:02:02
err.txt    0 FALSE  666 2013-07-15 00:02:06 2013-07-15 00:02:02
                      atime exe
out.txt 2013-07-15 00:02:02  no
err.txt 2013-07-15 00:02:02  no
R version 3.0.1 Patched (2013-07-10 r63264)
Platform: x86_64-w64-mingw32/x64 (64-bit)

locale:
[1] LC_COLLATE=English_United States.1252
[2] LC_CTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C
[5] LC_TIME=English_United States.1252

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

loaded via a namespace (and not attached):
[1] tools_3.0.1

/Henrik

On Mon, Jul 15, 2013 at 12:01 AM, Gabor Grothendieck
<ggrothendieck at gmail.com> wrote: