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I'm trying to use bibtool to extract bibliography information from an aux file. I'm using this MWE:

    author={Charles Dickens},
    title={A Tale of Two Cities},
    publisher={Chapman and Hall}



When I run:

bibtool -x test.aux -o refs.bib

I get the following errors:

*** BibTool WARNING:  (line 2 in ./test-blx.bib): 23 non-space characters ignored.

*** BibTool WARNING:  (line 9 in ./test-blx.bib): 168 non-space characters ignored.

*** BibTool ERROR:  (line 9 in ./test-blx.bib): Unknown entry type

*** BibTool WARNING: Skiping to next '@'

*** BibTool WARNING:  (line 5 in ./foo.bib): 96 non-space characters ignored.

My test.aux is as follows:

\@writefile{toc}{\boolfalse {citerequest}\boolfalse {citetracker}\boolfalse {pagetracker}\boolfalse {backtracker}\relax }
\@writefile{lof}{\boolfalse {citerequest}\boolfalse {citetracker}\boolfalse {pagetracker}\boolfalse {backtracker}\relax }
\@writefile{lot}{\boolfalse {citerequest}\boolfalse {citetracker}\boolfalse {pagetracker}\boolfalse {backtracker}\relax }

I presume this problem is because this tool has been written for bibtex rather than biblatex. Is there a way to use this tool to extract the information, or is there a way to extract the bibliography information I need?

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In case you are using biber to generate the bibliography, you might want to checkout the --output-format=bibtex commandline option as described in its manual. –  michel Nov 14 '13 at 19:51

1 Answer 1

up vote 6 down vote accepted

I found an answer to this. Change \bibstyle to plain in your .aux file, and delete the \citation{biblatex-control} line. bibtool should now be able to read your bibliography as per usual. (You might also want to remove test-blx.bib from the \bibdata thing, I can't remember if it works without that)

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