How can I generate a GUID in R?

Question

How can I generate GUIDs and UUIDs in R?

I would like to be able to generate GUIDs based on the hardware etc. of the machine running the rsession.

As a fall

Answer 1

I know nothing about the intricacies of UUID's, but would something like this do?

baseuuid <- paste(sample(c(letters[1:6],0:9),30,replace=TRUE),collapse="")

paste(
    substr(baseuuid,1,8),
    "-",
    substr(baseuuid,9,12),
    "-",
    "4",
    substr(baseuuid,13,15),
    "-",
    sample(c("8","9","a","b"),1),
    substr(baseuuid,16,18),
    "-",
    substr(baseuuid,19,30),
    sep="",
    collapse=""
)
# result like: "f7bd11ed-fca9-42e5-8c3e-4464cd02e0fa"

This should be in line with http://en.wikipedia.org/wiki/Uuid#Version_4_.28random.29