fix_date

#!/usr/bin/env bash

# Example
# find ./ -type f -iname '*.jpg' | ./fix_date '+1388 days+9 hours'

set -o pipefail
set -o nounset
set -o errexit

# time difference
diff=$1

while read -r file; do
  echo "Processing $file"

  current=$(stat -c%w "$file")
  echo "  current: $(date -d "${current}" +'%D %X')"

  new=$(date -d "${current}${diff}" +'%D %X')
  echo "  new:     $new"

  SetFile -d "$new" "$file"
done < /dev/stdin