Rename Photos Script

rphoto.sh

#! /bin/bash

# rphoto.sh - rename photos script
#
# Requirements:
# ExifTool (https://exiftool.org/)
#
# Usage:
# $1 = folder
# $2 = name
#
# Example:
# ./rphoto.sh Mallorca/ Mallorca
#
# Output:
# <name>_<counter>_<date>
#
# Info:
# Counter has leading zeros up to 1000 files.
# Date format is YYYYMMDD.
# Only jpeg and mov files are considered.
#
# Disclaimer:
# This script only works for some specific uses cases
# and it's not very fast at processing large amounts of files.
# The code is also not perfect and can certainly be improved.
# I just needed a tool to easily rename my vacation photos
# and didn't want to buy an overpriced app for macOS.

counter=1
files=()
length=0
types=("*.jpeg" "*.mov")

cd "$1"

# Set internal field separator to newline.
IFS=$'\n'

echo "Calculating..."

for file in ${types[@]}; do
  if [ -f "$file" ]; then
    # Rename file to avoid name conflicts.
    mv "$file" "$file.bak"

    # Store file in array.
    files+=("$file")
  fi
done

# Sort array.
sfiles=($(sort <<<"${files[*]}"))

# Get length of array.
length="${#sfiles[@]}"
echo "${length} files found."

# Calculate leading zeros.
if [ ${#sfiles[@]} -gt 999 ]; then
  format="%04g"
else
  format="%03g"
fi

for file in ${sfiles[@]}; do
  # Assign formatted counter.
  printf -v fcounter "${format}" $counter

  if [ "${file##*.}" == "jpeg" ]; then
    cdate=$(exiftool -s3 -CreateDate -d "%Y%m%d" "$file.bak")
  else
    cdate=$(exiftool -s3 -CreationDate -d "%Y%m%d" "$file.bak")
  fi

  mv "$file.bak" "$2_${fcounter}_${cdate}.${file##*.}"
  echo "Renamed ${counter}/${length} files."

  ((counter++))
done

echo "Done."

# Reset internal field separator.
unset IFS