How to create a cronjob backup for mysql slave?

There are few other threads about this question using mysqldump but however i tend to not use mysqldump but instead backup the whole files in /mysql. I would like to create a cronjob in mysql slave which only involves

slave

and

slave

. I only know how to use crontab with starting and stopping mysql (as below). Instead i have no idea how to insert start and stop slave in crontab. Any help?

19 * * * service mysql stop;rsync -avzr -e 'ssh -p 22' /home/mysql /home/DAILY-BACKUP-SQL;service mysql start