What is a neat command line equivalent to RStudio&

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?

回答1:

library(rmarkdown)

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

回答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