Rscript and Backticks

Question

I need to run knit2html on the command line using Rscript . I tried the following code and it works

Rscript -e "(knitr::knit2html(text = '## good', fragment.only = TRUE))"

However, when I introduce R code chunks (or anything involving backticks), the process hangs. So the following does NOT work

Rscript -e "(knitr::knit2html(text = '## good\n `r 1 + 1`',fragment.only = T))"

For the purpose of my use, I only have access to the contents and hence can NOT pass a file to knit2html , which I know will work.

My question is how do I make this work. I know the problem is the backticks and I have tried looking at escaping them, but nothing seems to be working.

Answer 1

it is a shell issue.

On windows it works.

On linux You need to escape the backtick like \\'

I think the reason , some shell interprets the double-quoted string once.

Answer 2

A related issue has been reported once here . You have to use single quotes to avoid shell expansion. I'm not sure if that applies to Windows as well, though.