This is bibexport v3.02 (released 2016/03/02)

bibexport: a tool to extract BibTeX entries out of .bib files. usage: bibexport [-h|v|n|c|a|d|s|t] [-b|e|es|ec|o|r file] file... Basic options: -------------- -a, --all export the entire .bib files -o bib, --output-file bib write output to file [default: bibexport.bib] -t, --terse operate silently -h, --help print this message and exit -v, --version print version number and exit Advanced options: ----------------- -b bst, --bst bst specifies the .bst style file [default: export.bst] -c, --crossref preserve crossref field [default: no] -n, --no-crossref remove crossref'd entries [default: no] -e bib, --extra bib extra .bib file to be used (crossrefs and strings) -es bib, --extras bib extra .bib file to be used (for strings) -ec bib, --extrac bib extra .bib file to be used (for crossrefs) -p, --preamble write a preamble at beginning of output -r bib, --replace bib replace .bib file(s) in the .aux file -d, --debug create intermediate files but don't run BibTeX