Question

为什么我没有得到echo "User password is= $typo"结果我怎么能在while循环后得到拼写错误的结果。

#!/bin/sh

pass_mes()
{
    read -sp 'Password: ' passvar
    echo $passvar           
}

password_verify()
{
    pass_ver=$(dscl /Search -authonly skull $typo 2>&1 | grep -i Authentication | awk '{print $1$5}')
        if [ "$pass_ver" == "Authenticationfailed." ]; then
            echo "Wrong_Password"
        else 
            echo "Correct_Password"
        fi
}

funtion_cancle()
{
        us_output=$(pass_mes)
            if [ "$us_output" == "User_Cancel" ]; then
                echo "User_Cancel"
            else
                echo "$us_output"
            fi
}


funtion_final_output()
{
    typo=$(funtion_cancle)
        if [ "$typo" == "User_Cancel" ]; then
            echo "User_Cancel"
        elif [ -z $typo ]; then
            echo "empty"
        else
            if [ "$(password_verify)" == "Correct_Password" ]; then
                echo "WORKING_SKULL"
            else
                #echo "Wrong_Password"
                echo "NOT_WORKING_SKULL"
            fi  
        fi      
}

retry_funtion()
{
    echo "****Wrong Password Typed****"
}

cancel_funtion()
{
    echo "***User Cancled ***"
}


############## Script start ##################

echo "Script start"

while :
do
    case    $(funtion_final_output) in
        "NOT_WORKING_SKULL") retry_funtion
        ;;
        "empty") retry_funtion
        ;;
        "User_Cancel") cancel_funtion exit
        ;;
        "WORKING_SKULL") break
        ;;
    esac
done

echo "User password is= $typo"

echo "Continue script using password $typo"

Answer 1

你正在像一个局部变量一样输入拼写错误。在脚本的主体中，“拼写错误变量未设置”。

换句话说，我不理解“funtion_cancle（）”函数的目的。如果“us_output”变量为“User_Cancel”，则返回“User_Cancel”，否则如果“us_output”为“a_valid_pass”则返回相同的...此函数不执行任何操作

我建议你这样做：

删除de“funtion_cancle（）”
在脚本开始时分配“拼写错误”。

一个例子：

#!/bin/sh


pass_mes()
{
    read -sp 'Password: ' passvar
    echo $passvar           
}

password_verify()
{
    pass_ver=$(dscl /Search -authonly skull $typo 2>&1 | grep -i Authentication | awk '{print $1$5}')
        if [ "$pass_ver" == "Authenticationfailed." ]; then
            echo "Wrong_Password"
        else
            echo "Correct_Password"
        fi
}



funtion_final_output()
{
        if [ "$typo" == "User_Cancel" ]; then
            echo "User_Cancel"
        elif [ -z $typo ]; then
            echo "empty"
        else
            if [ "$(password_verify)" == "Correct_Password" ]; then
                echo "WORKING_SKULL"
            else
                #echo "Wrong_Password"
                echo "NOT_WORKING_SKULL"
            fi
        fi
}

retry_funtion()
{
    echo "****Wrong Password Typed****"
    typo="$(pass_mes)"
}

cancel_funtion()
{
    echo "***User Cancled ***"
}


############## Script start ##################

echo "Script start"
typo="$(pass_mes)"

while :
do
    case    $(funtion_final_output) in
        "NOT_WORKING_SKULL") retry_funtion
        ;;
        "empty") retry_funtion
        ;;
        "User_Cancel") cancel_funtion; exit
        ;;
        "WORKING_SKULL") break
        ;;
    esac
done

echo "User password is= $typo"

echo "Continue script using password $typo"

Answer 2

正如之前人们所说，脚本的一部分在子shell中运行，因此$typo会丢失。

试试这个，它有效：

#!/bin/sh

pass_mes()
{
    read -sp 'Password: ' passvar
    echo $passvar           
}

password_verify()
{
    pass_ver=$(dscl /Search -authonly skull $typo 2>&1 | grep -i Authentication | awk '{print $1$5}')
        if [ "$pass_ver" == "Authenticationfailed." ]; then
            echo "Wrong_Password"
        else 
            echo "Correct_Password"
        fi
}

funtion_cancle()
{
        us_output=$(pass_mes)
            if [ "$us_output" == "User_Cancel" ]; then
                echo "User_Cancel"
            else
                echo "$us_output"
            fi
}


funtion_final_output()
{
    typo=$(funtion_cancle)
        if [ "$typo" == "User_Cancel" ]; then
        ret="User_Cancel"
            echo "${ret}"
        elif [ -z $typo ]; then
        ret="empty"
            echo "${ret}"
        else
            if [ "$(password_verify)" == "Correct_Password" ]; then
        ret="WORKING_SKULL"
                echo "${ret} ${typo}"
            else
                #echo "Wrong_Password"
        ret="NOT_WORKING_SULL"
                echo "${ret}"
            fi  
        fi      
}

retry_funtion()
{
    echo "****Wrong Password Typed****"
}

cancel_funtion()
{
    echo "***User Cancled ***"
}


############## Script start ##################

echo "Script start"

while read -r ret typo
do
    case    $ret in
        "NOT_WORKING_SKULL") retry_funtion
        ;;
        "empty") retry_funtion
        ;;
        "User_Cancel") cancel_funtion exit
        ;;
        "WORKING_SKULL") break
        ;;
    esac
done < <(echo $(funtion_final_output))

echo "User password is= $typo"

echo "Continue script using password $typo"

在我的解决方案中，运行while循环传递funtion_final_output参数，如：

while ... do ... done < <(echo $(funtion_final_output))

为了能够传递值，您不能只在功能中echo，而是将其分配给变量（funtion_final_output的一部分：）

当时：

if [ "$(password_verify)" == "Correct_Password" ]; then
                echo "WORKING_SKULL"if [ "$(password_verify)" == "Correct_Password" ]; then
                echo "WORKING_SKULL"

现在：

if [ "$(password_verify)" == "Correct_Password" ]; then
        ret="WORKING_SKULL"
                echo "${ret} ${typo}"

我已在if中的每个funtion_final_output中进行了类似的变量分配

接下来，当您在最终loop中传递变量时，您必须阅读它们。

while :改写为while read -r ret typo

享受。

在While循环和大小写之后，Shell函数字符串变量结果为空

2 个答案: