What is a neat command line equivalent to RStudio's Knit HTML?

Question

What is a neat command line equivalent to RStudio's Knit HTML? Given an .Rmd file, you can use RStudio to knit .html, .docx and .pdf files using Knitr. It would be great to shift this process completely to the command line. My approach so far:

Rscript -e "library(knitr); knit('test.Rmd')"  # This creates test.md pandoc test.md >> test.html 

This works fine, but the resulting test.html does not come with the same pretty make over as in RStudio. Any suggestions how one should best knit .Rmd files to .html via the command line, and end up with a pretty .html?

Extra question: What would be the best command line solution for .pdf or .docx?

Answer 1

rmarkdown::render("test.Rmd", "html_document") 

Answer 2

Following up on the accepted answer, I've drafted a bash script called "knitter" that will do everything needed, all the user needs to do is input: ./knitter file.Rmd file.html or ./knitter file.Rmd file.pdf.

The script is below:

#!/bin/sh  ### Test usage; if incorrect, output correct usage and exit if [ "$#" -gt 2  -o  "$#" -lt 2 ]; then     echo "********************************************************************"     echo "*                        Knitter version 1.0                       *"     echo "********************************************************************"     echo -e "The 'knitter' script converts Rmd files into HTML or PDFs. \n"     echo -e "usage: knitter file.Rmd file.{pdf,html} \n"     echo -e "Spaces in the filename or directory name may cause failure. \n"     exit fi # Stem and extension of file extension1=`echo $1 | cut -f2 -d.` extension2=`echo $2 | cut -f2 -d.`  ### Test if file exist if [[ ! -r $1 ]]; then     echo -e "\n File does not exist, or option mispecified \n"     exit fi  ### Test file extension if [[ $extension1 != Rmd ]]; then     echo -e "\n Invalid input file, must be a Rmd-file \n"     exit fi  # Create temporary script # Use user-defined 'TMPDIR' if possible; else, use /tmp if [[ -n $TMPDIR ]]; then     pathy=$TMPDIR else     pathy=/tmp fi # Tempfile for the script tempscript=`mktemp $pathy/tempscript.XXXXXX` || exit 1  if [[ $extension2 == "pdf" ]]; then     echo "library(rmarkdown); rmarkdown::render('"${1}"', 'pdf_document')" >> $tempscript     Rscript $tempscript fi if [[ $extension2 == "html" ]]; then     echo "library(rmarkdown); rmarkdown::render('"${1}"', 'html_document')" >> $tempscript     Rscript $tempscript fi