Can a Markdown error be used to control batch file execution?

Question

I have a program flow where a database command button writes a file with data from the current record, then executes a batch file (windows) to knit a markdown file using the output from the database as inputs.

"C:\Program Files\R\R-4.1.1\bin\i386\Rscript.exe" -e "library('knitr'); rmarkdown::render('MyMarkdownFile.Rmd', output_file='MyOutput.html')"

The final step is that this file is opened in a browser.

start "" "MyOutput.html"

I do not use a unique file name, the same html file (MyOutput.html in the example above) is over-written each time. Sometimes the markdown process throws an error and halts execution during the knit. In these cases the previous version of the html file is then opened by the next batch command and, to the users, this may be confusing: they may assume they are seeing the current report when in fact they are not. (Note there are clear labels to distinguish, but still ...). I am wondering if there is a way to somehow "know" within the batch file that there has been an error in the knit process and thereby halt execution of the batch so that the html is not opened in the final step.

Answer 1

See Mofi's comment. This is the answer. Simply inserting && between batch commands halts execution when the knit returns an error. Thank you.