title case file rename

gistfile1.txt

#!/bin/bash

# Set the list of small words to ignore
ignore_list="a an and but or nor the"

# Loop through all files in the current directory
for file in *
do
    # Split the file name and extension into separate variables
    filename="${file%.*}"
    extension="${file##*.}"

    # Split the file name into an array of words
    words=($(echo "$filename" | tr '-' ' '))

    # Initialize the new file name
    new_name=""

    # Loop through each word in the file name
    for word in "${words[@]}"
    do
        # Check if the word is in the ignore list
        if [[ " $ignore_list " =~ " $word " ]]; then
            # If the word is in the ignore list, just add it to the new file name as-is
            new_name+="$word "
        else
            # If the word is not in the ignore list, convert it to title case and add it to the new file name
            new_name+="$(echo "$word" | gsed -e 's/\b\(.\)/\u\1/g') "
        fi
    done

    # Trim the extra space from the end of the new file name
    new_name="${new_name% }"

    # Rebuild the file name with the new file name and the original extension
    new_file="$new_name.$extension"

    # Rename the file
    mv "$file" "$new_file"
done