I wrote: > 6 1 * * 7/4 root [ -x /usr/share/mdadm/checkarray ] && > /usr/share/mdadm/checkarray --cron --all --quiet > > would be closest to the described intention. That's actually wrong, sorry. I guess simply choosing a certain day of the month is the closest to the original intention of runing it on the 1st sunda of the month. Sencer