[R] Invoking shell commands from within R

Ross Ihaka ihaka at stat.auckland.ac.nz
Mon Apr 26 23:21:25 CEST 1999

On 26 Apr 1999, Fredrik Glockner wrote:

> In S-Plus, one can invoke a shell command by prepending it with a "!",
> e.g.:
>     > !ls
> Is something similar available in R?  Is it possible to execute shell
> commands from within R?

The code to support this is present in main.c.  To compile this in,
place the line


at the top of src/main/main.c.

Using "!" in this way is syntactically ugly and it was a general decision
to not make this a standard R feature (but I left the code in because I
"knew" someone would ask ...).


r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch

More information about the R-help mailing list