闰年脚本

闰年脚本

#!/bin/bash

echo "please input a year； "

read year

let  " n1 = $year % 4 "

let  "n2 = $year % 100"

let  "n3 = $year % 400"

if [ ! "n1" -eq 0 ]

then 

        leap = 0

elif [ ! "n2" -eq 0 ]

then 

        leap = 1

elif [ ! "n3" -eq 0 ]

then

        leap = 0

else 

        leap = 1

fi

if [ "leap" -eq 1 ]

then

        echo "$year is a leap year!"

else 

        echo "$year is not a year!"

fi