This script is designed to automate the backup of MySQL databases. It creates a compressed backup of specified databases, retains backups for a specified number of days, and synchronizes the backups to a remote server using rsync.
Recommended Usage: To schedule this script to run automatically at 3:00 AM every day, add the following entry to your crontab:
0 3 * * * /path/to/mysql_backup.sh
Ensure the script has executable permissions: chmod +x /path/to/mysql_backup.sh