[R] Returning Variables in R to Linux Shell

[Dirk Eddelbuettel]

On 22 April 2009 at 11:42, Whit Armstrong wrote:
| try littler:
| 
| warmstrong at linuxsvr2:/tmp$ export MYVALUE=`r -e 'cat(10)'`
| warmstrong at linuxsvr2:/tmp$ env|grep MYVALUE
| MYVALUE=10
| warmstrong at linuxsvr2:/tmp$

Thanks to a suggestion by Paul Gilbert, littler supports the 'status'
argument to q() to pass result codes back to the shell --- in bash you can
pick that up via $? as shown here:

edd at ron:~> r -e 'q(status=10)'; echo "Status was $?"
Status was 10
edd at ron:~>

Dirk

-- 
Three out of two people have difficulties with fractions.