Convert filenames based on the modification timestamp (this is important for multimedia files to be sorted right)

filename_converter.sh

#!/bin/bash

set -e

# Directory containing .AVI files
SOURCE_DIR="./"
# Directory where files will be copied
TARGET_DIR="./sorted"

# Create target directory if it doesn't exist
mkdir -p "$TARGET_DIR"

# Initialize a sequence number
seq_num=1

# Array of file extensions to process
extensions=("mov" "avi" "mp4" "MOV" "AVI" "MP4")

# Process each file type
for ext in "${extensions[@]}"; do
  # Process each file with the current extension
  for file in "$SOURCE_DIR"/*.$ext; do
    # Skip if no files are found
    [ -e "$file" ] || continue

    # Extract the basename of the file (without path and extension)
    base_name=$(basename -- "$file" .$ext)

    # Replace dots with underscores in base_name
    base_name=${base_name//./_}

    # Get last modification time from the filesystem in YYYYMMDDHHMMSS format
    mod_time=$(stat -c %y "$file" | cut -d '.' -f 1 | tr -d ' :-')

    # Format the sequence number with zero-padding to 3 characters
    formatted_seq_num=$(printf "%03d" "$seq_num")

    # Create new filename with the modification time, modified original name, and sequence number
    new_filename="${mod_time}_${formatted_seq_num}_(${base_name}).$ext"

    # Copy the file to the target directory with the new name
    echo "$file -->  $new_filename"
    cp "$file" "$TARGET_DIR/$new_filename"

    # Increment the sequence number for the next file
    ((seq_num++))
  done
done