#!/bin/bash

BIBFILE=references.bib
AUXFILE=report.aux
PAGER=less

TEMPAUX=$(mktemp)
TEMPBIB=$(mktemp)

echo "AUX: $AUXFILE => $TEMPAUX"
egrep '^\\citation' $AUXFILE|sort|uniq|perl -ne 's#\\citation{(.*)}#$1#; print;' > $TEMPAUX

echo "BIB: $BIBFILE => $TEMPBIB"
egrep '^@' $BIBFILE|sort|uniq|perl -ne 's#\@\S+\s*{\s*(\S+)\s*,#$1#; print;' > $TEMPBIB

echo "Comparing AUX with BIB (bib on the right). Using $PAGER pager."
echo "Press ENTER when ready."

read

diff -y $TEMPAUX $TEMPBIB | $PAGER