shell test应用

#!/bin/bash
echo "请输入两个参数："
read -a para
#echo "输入参数是: " $@
#for i in para
if test ${#para[@]} -ne 2
then
echo "应该输入两个参数"
else
printf "参数比较结果: "
if test ${para[0]} = ${para[1]}
then
echo "两个参数相等"
else
echo "两个参数不相等"
fi
fi