Schedule.rb :
every :hour do

   command "backup perform -t production_db_backups --config-file /home/sysadmin/Backup/config.rb"

end

crontab entry:

# Begin Whenever generated tasks for: /home/sysadmin/Backup/models/config/schedule.rb

0 * * * * /bin/bash -l -c 'backup perform -t production_db_backups --config-file /home/sysadmin/Backup/config.rb'


# End Whenever generated tasks for: /home/sysadmin/Backup/models/config/schedule.rb