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Original Raw

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

Thread (4 messages)

Bierbryer, Andrew Returning Variables in R to Linux Shell Apr 22 Whit Armstrong Returning Variables in R to Linux Shell Apr 22 Barry Rowlingson Returning Variables in R to Linux Shell Apr 22 Dirk Eddelbuettel Returning Variables in R to Linux Shell Apr 23