linux

start_date="20180726"end_date="20180830"while [ "$start_date" != "$end_date" ];do  stat_date=`date -d "$start_date" +%Y-%m-%d`  echo $stat_date  start_date=$(date -d "$start_date+1days" +%Y%m%d)done

mac

begin="2019-04-02"begin=`date -j -f %Y-%m-%d $begin +%s`for (( i = 0; i < 35; i++ )); do    current=`date -r $(expr $begin + $i \* 86400) +"%Y-%m-%d"`    year=${current:0:4}    month=${current:5:2}    day=${current:8:2}    echo $currentdone