pdflatex command output only warnings

Question

Is there a way to run pdflatex such that it outputs only the warning messages?

Thanks.

Answer 1

pdflatex does not seem to support only outputting warnings.

Using pdflatex --interaction=nonstopmode <filename> | grep Warning (due to @Andrew) has the disadvantage of cutting off warnings that span across multiple lines.

Instead, I am currently using this command:

pdflatex --interaction=nonstopmode <filename> | awk 'BEGIN{IGNORECASE = 1}/warning|!/,/^$/;'

It runs pdflatex in nonstopmode (continues on errors), and then filters the output using awk. The filter captures warning (case insensitive) and exclamation marks (sometimes used to indicate an error).

Answer 2

To get a list of all warnings in your document, you could use the building ltx2any. It parses the .log file and creates neat list with all error messages and warnings in different file formats.

One example of what such a list can look like: