From: Brent L. Bates <blbates at vigyan.com> > From: mcclnx mcc > > 0 0 8-31/14 * 6 /script.sh > From: John Doe > > 0 0 8-14 * 6 /script.sh > > 0 0 22-28 * 6 /script.sh > According to the man page, neither of these will not do what the OP > wants. Both will execute the command EVERY Saturday. The first will also > execute it on the 8th and 22nd of the month. The second will execute the > command TWICE a day AND days 8-14 AND 22-28. The man pages says if any of the > day parameters match, the command is executed. Unfortunately for the OP, the > day parameters are an OR operation and not an AND operation. Oops, I missed that part... you are right. Guess the date check will have to be out of cron... In case the even/odd week of the year does not work (I am not sure all months will start on odd weeks; do they?), here's another try: 0 0 * * 6 [ $((`date +"%d"`%14)) -ge 8 ] && script.sh Would that work? JD