024-engine-awk.Rmd

Does Awk work in **knitr**?

We need to pass a `file` option to Awk.

```{r test-awk, engine='awk', engine.opts=shQuote(system.file('examples', 'knitr-manual.Rnw', package = 'knitr'))}
# how many non-empty lines?
NF {
  i = i + 1
}
END { print i }
```