[BibTeX] [JabRef] [keys] Replace citation keys in existing TeX document after globally altering key generation pattern in JabRef

key-switch.sh

#!/bin/sh

### STEPS
# JabRef: Back-up original bibtex keys to new var called Orig_bibtexkey
# JabRef: Amend key pattern (as you do...)
# JabRef: Create custom export.layout file below
# echo '\format[GetOpenOfficeType]{\bibtextype},"\bibtexkey","\Orig_bibtexkey",' > jabref-export-keysonly.layout
# JabRef: Exprt to .csv, then to .txt file
# One line per pair of citations, each pair separated by [space]
# Execute this bash script on target .tex file: sh ./key-switch.sh
###

cat map.txt | while read line; do
neww=${line##* };
oldw=${line%% *};
find ./ -type f -name "*.tex" -exec sed -i "s/\b$oldw\b/$neww/g" {} \;
done