#!/bin/sh
declare -i Result_M
declare -i Resilt_S
declare -i Resilt_H
start=`date | cut -d " " -f 6`
start_H=`echo $start |cut -d ":" -f 1`
start_M=`echo $start |cut -d ":" -f 2`
start_S=`echo $start |cut -d ":" -f 3`

echo "Prease press the Enter Key if you want to stop."
read PUSH_KEY
#if [ "$PUSH_KEY" = "" ]; then
#       echo "Stop"
#fi
End=`date |cut -d " " -f 6`
End_H=`echo $End | cut -d ":" -f 1`
End_M=`echo $End | cut -d ":" -f 2`
End_S=`echo $End | cut -d ":" -f 3`

Result_H=$(($End_H - $start_H))
Result_M=$(($End_M - $start_M))
Result_S=$(($End_S - $start_S))

if [ $Result_S -lt 0 ]; then
        Result_H=`expr 24 + $Result_S`
fi
if [ $Result_M -lt 0 ]; then
        Result_M=$((60 + $Result_M))
        Result_H=`expr Result_H - 1`
fi
if [ $Result_S -lt 0 ]; then
        Result_S=`expr 60 + $Result_S`
        Result_M=`expr $Result_M - 1`
fi
echo "$Result_H 時間 $Result_M 分 $Result_S 秒"
exit 0