I am not sure R can do what you want (others may), but have a look at ?history
for R's history mechanism, which keeps a record of all commands that you have entered and so might satisfy your needs. Note that there are various 3rd party GUI's/IDE's (e.g. RStudio) that might be more to your liking. The CRAN web site should contain information on at least some of them. Cheers, Bert On Mon, Nov 4, 2013 at 1:32 PM, Martin Gregory <grego...@t-online.de> wrote: > I'm using R in a regulated environment and one of the requirements is to be > able to trace how a result is arrived at. I would like to be able to > determine which files are opened in read or write mode by an R session, for > example when a program uses source, sink, file, open, read.table, > write.table or any of the other functions which can be used to read or write > files. I'm also interested in output to graphics devices. > > I've looked in the documentation but only found information relating to > profiling. Looking through the source code it seems that much file i/o is > done via the C functions *_open in main/connections.c but don't see anything > there that looks like logging. > > Could someone let me know if it is possible to log which files are opened? > > Regards, > Martin Gregory > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel -- Bert Gunter Genentech Nonclinical Biostatistics (650) 467-7374 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel