%u day of week (1..7); 1 is Monday
今天是本周的第几天
$ date +%u
20130714是一周的第几天$ date -d "20130714" +%u
4 day_of_this_week=$(date +%u) # 1...7
5 predays_start=$(expr $day_of_this_week - 1 + 7)
6 predays_end=$(expr $day_of_this_week - 1)
7 date_start=`date +%Y-%m-%d -d "-$predays_start days"`
8 date_end=`date +%Y-%m-%d -d "-$predays_end days"`
9 echo "Computing the fault_click_rate from ["$date_start"] to ["$date_end"] ..."