system() not accepting strings from cat()
OH! The joy! It worked like a sharm. Thank you. culpritNr1
baptiste auguie-2 wrote:
try ?paste baptiste On 10 Mar 2009, at 20:01, ig2ar-saf1 at yahoo.co.uk wrote:
Hi again R-ists, How do you construct a string that you can pass to system()? For instance. Say I do
system("echo Hello!")
Hello! That works. Now the alternative: I need to construct the string like this
a <- "echo" b <- "Hello!" c <- "\n" cat(a, b, c)
echo Hello! Looks nice... but see what happens when I try to use it
system(cat(a, b, c))
echo Hello! Error in system(command, intern) : non-empty character argument expected I have googled extensively in and out of r-lists but I can't find a solution. Can anybody help?
______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
_____________________________ Baptiste Augui? School of Physics University of Exeter Stocker Road, Exeter, Devon, EX4 4QL, UK Phone: +44 1392 264187 http://newton.ex.ac.uk/research/emag ______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
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