How to list uncited .bib entries?

Question

I would like to list all items in my .bib database which are not cited by a particular document, to make sure I have not overlooked citing anything that I intended to cite. Is there an easy way to do this?

Answer 1

Here's a quick and dirty way to get the job done in the unix shell:

comm -13 <(sed -n 's/^\\bibitem{\(.*\)}/\1/p' < document.bbl | sort) \
         <(sed -n 's/^@\(.*\){\(.*\),/\2/p' < myrefs.bib | sort)