deleting old files using crontab

Question

I use the following crontab record in order to daily backup my DB:

0 2 * * * MYSQL_PWD=password mysqldump -u user db_name > $HOME/db_backups/db_name-$(dat         


        

Answer 1

find /db_backups/ -mtime +30 -delete

This command would delete DB backups older than 30 days.

Answer 2

Just create another cron:

0 3 * * * find $HOME/db_backups -name "db_name*.sql" -mtime +30 -exec rm {} \; >> $HOME/db_backups/purge.log 2>&1

It will find all backups older than 30 days and delete them.

Answer 3

There is a tool called tmpreaper that securely deletes files matching certain criteria, such as an access or modification date n days in the past.