字符串比较-之路教程

shell判断字符串长度是否为0

-z STRING

#!/bin/bash
read -s -p "请输入密码 " pass
echo 
if test -z $pass 
then
    echo "密码不能为空!"	
    exit 1
fi

STRING1 = STRING2

#!/bin/bash
pass="oir"
echo 
if test "$pass" = "oir"
then
    echo "password is correct!"
fi

STRING1 != STRING2

#!/bin/bash
pass="oir"
echo 
if test "$pass" != "oir"
then
    echo "wrong password!"
fi

字符串比较

日期：2019-04-16 23:59:04 来源：oir作者：oir