crontab

yum install crontabs ( for not found with centos )

crontab -l

crontab -e

0  0  *  *  *  mysqldump -u root -ppassword redmine > /home/pointermans/backup/redmine/$(date +\%Y-\%m-\%d)_redmine_db_backup.sql

vi /etc/cron.allow ( add user for allow )

/etc/init.d/crond restart

sample >
0  0  *  *  *  mysqldump -u root -pabwmthvmxm.co.kr redmine > /home/pointermans/backup/redmine/$(date +\%Y-\%m-\%d)_redmine_db_backup.sql
0  0  *  *  *  tar -czvf /home/pointermans/backup/redmine/$(date +\%Y-\%m-\%d)_redmine_file_backup.tar.gz /var/lib/redmine/files
23  15  *  *  0  tar -czvf /home/pointermans/backup/redmine/$(date +\%Y-\%m-\%d)_git_backup.tar.gz /home/git
0  0  *  *  * find /home/pointermans/backup/redmine/ -type f -name "*.*" -mtime +5 -exec rm {} \;


============
stop & disable
============

/etc/init.d/crond stop

mv /var/spool/cron  /var/spool/cron_is_disabled