I wish to download and open the following tar.gz file in R:
http://s.wordpress.org/resources/survey/wp2011-survey.tar.gz
Is there a command which can accomplish this?
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Ben Bolker
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Tal Galili
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@Ramnath, much closer than joran's: maybe worth closing/merging ... – Ben Bolker Aug 22 '11 at 18:45
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Sorry for the ultra duplicates. I searched a bit before posting - but apparently not enough. My apologies. – Tal Galili Aug 22 '11 at 21:49
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fn <- "http://s.wordpress.org/resources/survey/wp2011-survey.tar.gz"
download.file(fn,destfile="tmp.tar.gz")
untar("tmp.tar.gz",list=TRUE) ## check contents
untar("tmp.tar.gz")
## or, if you just want to extract the target file:
untar("tmp.tar.gz",files="wp2011-survey/anon-data.csv")
X <- read.csv("wp2011-survey/anon-data.csv")
Offhand, I don't know of a way to reach into the tar file and read the appropriate csv file without unpacking it ...
Ben Bolker
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is it also possible to untar only a specific file inside a tarball?? I think the `files` argument in `untar` does this but am unsure how ?? Help appreciated .. – Ashwin Dec 08 '14 at 10:27