时间比较shell

#!/bin/sh#################################################################endPoint="17:32:00"endPoint=$1t_endTime=`date '+%Y%m%d'`" "$endPoints_endTime=`date -d "$t_endTime" '+%s'`now=`date '+%Y%m%d %H:%M:%S'`s_now=`date -d "$now" '+%s'` echo "endTime : $t_endTime ($s_endTime)"echo "now : $now ($s_now)"diffsec=`expr $s_endTime - $s_now`echo "diff : $diffsec seconds"if [ ${s_now} -gt ${s_endTime} ]; then echo "reach!"else echo "no" fi