[R] System exit codes

[Prof Brian Ripley]

On Wed, 30 Jul 2008, Ranjan Bagchi wrote:

> Hi --
>
> Is there a way of detecting the exit code while calling system or pipe?

Yes, see the help page (you are ignoring the return value).

> print(system("perl -e 'print \"foo\\\n\";exit(-1);'"))
foo
[1] 65280

(= 256*255)

> eg (on Unix)
>
>> system("perl -e 'print \"foo\\\n\";exit(-1);'")
> foo
>
> Any help appreciated,
>
> Ranjan
>
> ______________________________________________
> R-help at 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.

PLEASE do.


-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595