iterating over files in a directory with R

Hello, 

I'm an R newbie and was wondering whether there are R commands for iterating over files in a directory.  Basically what I want to do is to iterate over many files and apply some R functions to each file seperately.  

e.g. for (each file in a directory) do { some R calculation with the info in that file }

Could someone please give me a pointer to how (or if) this might be done with R - I haven't yet been able to find anything relevant in the manuals.  Or would I need to call each file with some language such as Java and then use R once I have the file name?

Thanks for your help,

femke
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