How to create a tar.gz file in R?

问题:

I would create a tar.gz file from R. But the tar function doesn't work me. This is my example code.

writeLines('aaaa', 'tmp.txt') tar('tmp.tar.gz', 'tmp.txt', compression = 'gzip') 

This code creates a tmp.tar.gz, but tmp.txt doesn't include in the gz file.

Are there any mistakes in my code?

Thanks for any suggestions.

I run this code in windows and linux:

#Windows platform sessionInfo() R version 3.1.0 (2014-04-10) Platform: x86_64-w64-mingw32/x64 (64-bit)  locale: [1] LC_COLLATE=English_Australia.1252  LC_CTYPE=English_Australia.1252    [3] LC_MONETARY=English_Australia.1252 LC_NUMERIC=C                       [5] LC_TIME=English_Australia.1252      attached base packages: [1] stats     graphics  grDevices utils     datasets  methods   base       loaded via a namespace (and not attached): [1] tools_3.1.0  #Linux platform sessionInfo() R version 3.1.0 (2014-04-10) Platform: x86_64-pc-linux-gnu (64-bit)  locale:  [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C         LC_TIME=C            LC_COLLATE=C          [5] LC_MONETARY=C        LC_MESSAGES=C        LC_PAPER=C           LC_NAME=C             [9] LC_ADDRESS=C         LC_TELEPHONE=C       LC_MEASUREMENT=C     LC_IDENTIFICATION=C   attached base packages: [1] stats     graphics  grDevices utils     datasets  methods   base       other attached packages: [1] weaana_0.1.0.3874  abind_1.4-0        reshape2_1.4       ncdf4cf_0.1.0.3698 ncdf4_1.10         [6] stringr_0.6.2      My_0.1.0.4086       loaded via a namespace (and not attached): [1] Rcpp_0.11.1 plyr_1.8.1  tools_3.1.0 

回答1:

I guess you do not have set the "tar" environmental variable. The default argument of tar() called tar is set by a call to Sys.getenv("tar"). If it is an empty string, then R's internal tar is used (it doesn't work on my system either).

So, you may either Sys.setenv the "tar" variable, or provide the name of external tar command/path manually:

tar('tmp.tar.gz', 'tmp.txt', compression = 'gzip', tar="tar") 

文章来源: How to create a tar.gz file in R?