Enter into crontab
25 7 * * * root mysqldump -u root -pPASSWORD --all-databases > /home/username/msql_database_`'+%m-%d-%Y'`.sql
Enter at prompt
mysqldump -u root -pPASSWORD --all-databases > /home/username/database_all.sql
Change admin Password
mysqladmin -u root -pOLDPASSWORD password NEWPASSWORD