/etc/cron.d/yourcronfile
MAILTO="root" # minute (0-59) # hour (0-23) # day of month (1-31) # month (1-12) # day of week (0-7) # [minute] [hour] [day of month] [month] [day of week] [command to run] 0 * * * * root /usr/local/sbin/yourscript > /dev/null 2>&1
For example, to run a command every minute:
/etc/cron.d/every_minute
MAILTO="root" # minute (0-59) # hour (0-23) # day of month (1-31) # month (1-12) # day of week (0-7) # [minute] [hour] [day of month] [month] [day of week] [command to run] * * * * * root /usr/local/sbin/yourscript > /dev/null 2>&1