shell日期的应用

1 #!bin/bash
 2 
 3 del_table()
 4 {
 5         #月初的第一天
 6         month_first_day=`date +%Y%m01`
 7 
 8         #要删除的日期
 9         last_7day_ago=`date -d "-8day" +%Y%m%d`
10 
11         #drop table
12         table='t_focus_goods_coral_month_'$last_7day_ago
13 
14         if [[ $month_first_day == $last_7day_ago ]];then
15         exit 0
16         else
17         #mysql -h 1270.0.01 -uxx -pxx -P 3307 -A focus  -e "drop table ${table}"
18         echo "${table}"
19         fi
20 }
21 
22 del_table