On Nov 7, 2012, at 12:08 , didier peeters wrote:

> Hi list,
> 
> I would like the run a R script in a batch mode.  So i use a command line 
> like this :
> 
> for i in *.xlsx; do cat $i | echo 'argv <- $i; source("path/to/script.R")' | 
> R --vanilla --slave ; done
> 
> which gives the error " Erreur : '$' inattendu(e) dans "argv <- $" "
> 
> i've also tried  :
> 
> for i in *.xlsx; do cat $i | R CMD BATCH --args $i "path/to/script.R" ; done
> 
> which gives me nothing.  
> 
> The idea is to read dozens of similar excel files in a folder with gdata 
> package and to write their content in another single file.  
> My script works fine with a read.xls when i specify a file name, but and here 
> I get the name of the file with :
> argv <- commandArgs(TRUE)
> 
> This is all I've been able to find from various docs and I'm not familiar 
> with the command line.  
> What am I doing wrong ?
> Could anyone help me ?

You need to read up on shell command syntax. In particular, the "cat $i | 
command" bit would pipe the content of the file $i into the command, which 
makes no sense when the command is "echo" or "R". Also check up on the use of 
single and double quotes.


> 
> Didier
>       [[alternative HTML version deleted]]
> 
> _______________________________________________
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-- 
Peter Dalgaard, Professor
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd....@cbs.dk  Priv: pda...@gmail.com

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