[R] decompress tar.gz and zip files

[Nathan S. Watson-Haigh]

Can anyone point me in the right direction for decompressing text files that are 
compressed as tar.gz or zip files?

Cheers,
Nathan

-- 
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Dr. Nathan S. Watson-Haigh
OCE Post Doctoral Fellow
CSIRO Livestock Industries
University Drive
Townsville, QLD 4810
Australia

Tel: +61 (0)7 4753 8548
Fax: +61 (0)7 4753 8600
Web: http://www.csiro.au/people/Nathan.Watson-Haigh.html