I am already using this to extract all items cited in a book: Creating .bib file containing only the cited references of a bigger .bib file But now I want to extract all cited items from two books.
So up to now I used:
biber --output_format=bibtex --output-legacy-date handbook.bcf -O hpsg-handbook-bibliography.bib
Now I would like something like:
biber --output_format=bibtex --output-legacy-date handbook.bcf gt.bcf -O new-bibliography.bib
So the idea is to pass two .bcf files. Is there a trick to make this work? Alternatively the only way to get the items is to create a document including all the tex stuff from both projects. But this would be 2500 pages and probably a code nightmare.
biber --tool large.bib, biber will then create a large_bibertool.bib and remove all duplicates in the process. – Ulrike Fischer Nov 11 '21 at 16:45