?difftime
?file.info
file.info(filename)$mtime
Sys.sleep(20)
Nikhil Kaza
Asst. Professor,
City and Regional Planning
University of North Carolina
nikhil.l...@gmail.com
On Jun 1, 2010, at 10:07 AM, zhangted001 wrote:
Hello, I have a question about how R can run automatically. Here is
the
story:
A file called "data.csv" will be generated every couple of minutes
in a
folder (overwrite itself). What I want R to do is:
1) scan the folder to find the file.
2) if the file is a newly generated file, process the file
3) output some file identifier on the screen, such as the time when
the file
was generated.
4) pause for 20 seconds (doesnt need to be precise) and repeat 1)
Idealy, I would like R to do this everyday from 9:00am to 6:00pm.
What I got so far is: I can use list.files() and file.info to get 1)
and 2).
For 4), I can write some trivial loop to kill some time, but I would
like to
be more accurate tham that, considering different PC running the
loop. I
have no idea about 3).
Any suggestion/better solution?
Thank you very much!!
Best regards,
Ted
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