时间比较shell

#!/bin/sh ################################################################ #endPoint="17:32:00" endPoint=$1 t_endTime=`date '+%Y%m%d'`" "$endPoint s_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