REXIF - Fix EXIF data based on file name

rexif.sh

#!/bin/bash

files="*.jpg"
regex="IMG_([0-9]{4})([0-9]{2})([0-9]{2})_([0-9]{2})([0-9]{2})([0-9]{2}).*"

for f in $files; do
  [[ $f =~ $regex ]]
  y="${BASH_REMATCH[1]}"
  m="${BASH_REMATCH[2]}"
  d="${BASH_REMATCH[3]}"
  hour="${BASH_REMATCH[4]}"
  min="${BASH_REMATCH[5]}"
  sec="${BASH_REMATCH[6]}"

  exifdate=$(exiftool -ModifyDate -S $f)
  filedate="ModifyDate: ${y}:${m}:${d} ${hour}:${min}:${sec}"

  if [[ $exifdate == $filedate ]]; then
    echo "EXIF [ OK       ] $f"
  else
    echo "EXIF [ MISMATCH ] $f"
    echo "     Trying to fix EXIF data..."
    exiftool -all= -tagsfromfile @ -all:all -unsafe $f
    exiftool -ModifyDate="${y}:${m}:${d} ${hour}:${min}:${sec}" $f
    echo "     Done!"
    echo ""
  fi
done