how to copy the file with source and destination using shells script

Steps to copy the file from source and destination comparison

Create the script with backup.sh

#!/bin/bash

current_files=$(ls)
destination_files=$(ls “$destination_folder”)

for file in $current_files; do

if [[ -f “$destination_folder/$file” ]]; then

mv “$destination_folder/$file” “$backup_folder”

fi

done

Save the script :wq

Change the permission $ chmod 755 backup.sh