shell 时间处理

start_dt="20130101";

end_dt="20131231";

for ((i=0;i<= $(($(date +%s -d "$end_dt") - $(date +%s -d "$start_dt")))/86400 |bc ;i++)) ;do

• report_day=$(date -d "$start_dt +$i day" +%Y%m%d)

• echo $report_day

done

 

 

if [ "$1" != "" ];then

        curday=$1

        curtime=$1

reportime=$1

        greptime=$curtime

        statime=$curtime

else

        curday=`date -d "30 minutes ago" +%Y%m%d`

        curtime=`date -d "30 minutes ago" +%Y-%m-%d\ %H:%M:%S`

        reportime=`date -d "30 minutes ago" +%Y%m%d%H%M%S|awk '{print substr($1,0,11);}'`

        greptime=`echo $curtime|awk '{print $1" "substr($2,1,4);}'`

        statime=`echo $curtime|awk '{print substr($2,1,4);}'`

fi