#!/bin/sh # 获取所在季度的第一天，到昨天的日期间隔 # link：www.1sucai.cn # date：2013/2/28 day=`date -d "1 days ago " "+%Y%m%d"`; year=`expr substr ${day} 1 4`; month=`expr substr ${day} 5 2`; s_date=$year"0101" if [ "$month" == "01" ] || [ "$month" == "02" ] || [ "$month" == "03" ];then    s_date=$year"0101" elif [ "$month" == "04" ] || [ "$month" == "05" ] || [ "$month" == "06" ];then    s_date=$year"0401" elif [ "$month" == "07" ] || [ "$month" == "08" ] || [ "$month" == "09" ];then    s_date=$year"0701" elif [ "$month" == "10" ] || [ "$month" == "11" ] || [ "$month" == "12" ];then    s_date=$year"1001" fi e_date=$day sys_s_data=`date -d "$s_date" +%s` sys_e_data=`date -d "$e_date" +%s` interval=`expr $sys_e_data - $sys_s_data` daycount=`expr $interval / 3600 / 24 + 1` echo $daycount