linux下从命令行下读入两个数字，并比较大小

#!/bin/bash

echo "Please input number a:"

read a

echo "Please input number b:"

read b

if [ "$a" -eq "$b" ]

then echo "$a equals $b"

elif [ "$a" -gt "$b" ]

then echo "$a is greater than $b"

else

echo "$a is less than $b"

fi