[R] Start and Restart R over SSH

[Rainer M Krug]

Douglas Bates wrote:
> On 2/19/07, Nils Höller <mail at nhoeller.de> wrote:
>> Hi,
>>
>> I have some big calculations in R to be done.
>> Since I can use R on a server with ssh, i was wondering if I can reopen
>> a R Shell after exiting ssh.
>>
>> I don't want to use the batch mode and nohup doesn't work.
>>
>> I want to use something like
>> ssh user at server
>> R
>> ---do something in R and start calculation ---
>> close ssh but let R remain on the server, doing the calculation
>>
>> ssh user at server
>> open the existing R Shell / Process
>>
>> Has anyone done something similiar?
>> Can you help me or suggest an other solution ?
> 
> I don't think it is possible to reattach to a process started in one
> ssh session from another ssh session.  However, you can put a session

No, it is. Check out the screen command - it is backgrounding your 
session, you can have several running at the same time and reattach and 
they persist between logouts (obviously, if you switch the computer of, 
it is gone...)

Rainer

> into the background with the -f flag to ssh.  You haven't told us what
> operating system you are starting the ssh connection on and what
> system will run the R process.  If I had an X server running on the
> local system and the remote system provided X clients like xterm I
> would do this by
> 
> ssh -X -f user at server xterm
> 
> This should spring up an autonomous xterm window on the local machine
> after which you can run R in it.
> 
> I hope this helps.
> 
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-- 
Rainer M. Krug, Dipl. Phys. (Germany), MSc Conservation
Biology (UCT)

Department of Conservation Ecology and Entomology
University of Stellenbosch
Matieland 7602
South Africa

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       	Rainer at krugs.de