R, passing variables to a system command

Question

Using R, I am looking to create a QR code and embed it into an Excel spreadsheet (hundreds of codes and spreadsheets). The obvious way seems to be to create a QR code using

Answer 1

Let's say we have the variable x that we want to pass on to dmtxwrite, you can pass it on like:

x = 10
system(sprintf("dmtxwrite %s -o image.png", x))

or alternatively using paste:

system(paste("dmtxwrite", x, "-o image.png"))

but I prefer sprintf in this case.