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DATA MINING
Desktop Survival Guide by Graham Williams |
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Internet |
You can check whether you have access to an Internet connection using
the nsl function, checking for a specific hostname:
> nsl("www.r-project.org")
[1] "137.208.57.37"
> if(is.null(suppressWarnings(nsl("www.r-project.org")))) print("Connected?")
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