#minute (0-59),
#|      hour (0-23),
#|      |       day of the month (1-31),
#|      |       |       month of the year (1-12),
#|      |       |       |       day of the week (0-6 with 0=Sunday).
#|      |       |       |       |       commands

0       4       *       *       *       cd ~/farm; git pull
*/5     *       *       *       *       cd ~/ixdns; ./sync-db
31      *       *       *       *       cd ~/ixdns; ./backup-db
7       *       *       *       *       dels -s