shell案例教程

1、判断两个数字的大小

#!/bin/bash
#定义变量
num1=$1
num2=$2

#判断num1和num2是否符合标准
if [[ $num1 =~ ^[0-9]+$ && $num2 =~ ^[0-9]+$ ]];then
if [ $num1 -lt $num2 ];then
echo "num2 > num1"
elif [ $num1 -eq $num2 ];then
echo "num2 = num1"
else echo "num1 > num2"
fi
else
echo "请输入正确数值"
fi