Bulk files rename for Ubuntu Linux

_bulk_rename.sh

#!/bin/bash

# Specify the directory where the files are located
directory="/home/user/Videos/2023-08-18"

# Change to the directory
cd "$directory"

# Iterate over the files matching the pattern and rename them
for file in [0-9]*.mp4; do
    new_filename=$(echo "$file" | sed -E "s/^([0-9]+)\.mp4$/_name-prefix-\1.mp4/")
    mv -v "$file" "$new_filename"
done