Renames files from somename-here.jpg.~#~ to somename-here.~#~.jpg

rename-mv-backups.sh

#/bin/env bash
# Renames files from somename-here.jpg.~#~ to somename-here.~#~.jpg

INDIR='./out'
REGEX='.*/[^\/]+?\.[a-z0-9]+\.~[0-9]+~'

set -e

echo "Searching in ${INDIR}"

find "${INDIR}" -type f -regex "${REGEX}" | while read path; do

  FN=$(basename "${path}")
  DN=$(dirname "${path}")
  ORIGINAL_NAME="${FN%.*}"
  NAME_ONLY="${FN%%.*}"
  BKUP_NUM="${FN##*.}"
  EXT="${ORIGINAL_NAME##*.}"
  NEW_NAME="${NAME_ONLY}.${BKUP_NUM}.${EXT}"

  mv "${DN}/${FN}" "${DN}/${NEW_NAME}"
done