sadsf#!/bin/bash
read -p "input your exit arm date:(format YYYYMMDD)" date1
date_temp=$(echo $date1|grep '[[:digit:]]\{8\}')
echo "date_temp: $date_temp"
if [ "$date_temp" == "" ]; then
echo "must yyyymmdd"
exit 1
else
declare -i date_dem=`date -d "$date1" +%s`
declare -i date_now=`date +%s`
declare -i date_cha=$(($date_dem-$date_now))
if [ "$date_cha" -lt "0" ]; then
echo "have been exit arm"
else
declare -i date_d=$(($date_cha/60/60/24))
declare -i date_h=$(($(($date_cha-$date_d*60*60*24))/60/60))
echo "$date_d days $date_h hours exit"
fi
fi
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