Question

我有一个很小的问题，让我感到紧张。我写了一个用于锁定文件夹的程序，我给了它选项来更改密码以及tipp，但是，如果没有输入tipp，我希望它只打印任何内容。相反，它说＆＃34;回声关闭＆＃34;

我猜它是语法，但我不知道在哪里。有人可以为我仔细检查。谢谢！

    @Echo Off
setlocal EnableDelayedExpansion
mode con cols=80 lines=25
set /a "tries=3"
color 5F
title Folder Locker by KBKOZLEV
:SETPASS
set "tipp="
set "password="
if exist "password.txt" (
    set /p password=<password.txt
    attrib +h +s "password.txt"
)
if exist "tipp.txt" (
    set /p tipp=<tipp.txt
    attrib +h +s "tipp.txt"
)
:START
if exist "Locked" goto :OPEN
if exist "Unlocked" goto :LOCK
if not exist "Unlocked" goto :MDLOCKER

:LOCK
ren "Unlocked" "Locked"
attrib +h +s "Locked"
echo.
echo Folder locked.
CHOICE /C X /T 1 /D X > nul
goto :END
exit

:MDLOCKER
md "Unlocked"
echo>password.txt 1234
echo>tipp.txt 1234
attrib +h +s "password.txt"
attrib +h +s "tipp.txt"
cls
echo.
echo Private folder created successfully.
CHOICE /C X /T 1 /D X > nul
goto :END

:OPEN
color 2F
cls
echo ********************************************************************************
echo                          Folder Locker by KBKOZLEV v.01                       
echo. 
echo ********************************************************************************
echo ---- Enter password to unlock folder, or enter "new" to set a new password. ----
echo                            You have %tries% attempts left.
echo --------------------------------------------------------------------------------
echo.
echo Password tipp: %tipp%
echo.
set "pass="
Set /P "=Password:" < Nul
set "psCommand=powershell -Command "$pword = read-host -AsSecureString ; ^
    $BSTR=[System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($pword); ^
        [System.Runtime.InteropServices.Marshal]::PtrToStringAuto($BSTR)""
for /f "usebackq delims=" %%p in (`%psCommand%`) do set pass=%%p

if /i "%pass%"=="new" goto :NEWPASS
if "%pass%"=="%password%" (
    attrib -h -s "Locked"
    ren "Locked" "Unlocked"
    echo.
    echo Folder unlocked successfully.
    goto :END
)
set /a tries=%tries -1
if %tries%==0 (
goto :FAIL2 
)
goto :FAIL
:FAIL
color 4F  
cls
echo.
echo Invalid password, please try again.
CHOICE /C X /T 1 /D X > nul
cls
goto :OPEN
:FAIL2
color 4F  
cls
echo.
echo Invalid password, program will now close.
CHOICE /C X /T 2 /D X > nul
cls
goto :END
:NEWPASS
color 8F
cls
echo.
set "oldpass="
Set /P "=Old Password:" < Nul
set "psCommand=powershell -Command "$pword = read-host -AsSecureString ; ^
    $BSTR=[System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($pword); ^
        [System.Runtime.InteropServices.Marshal]::PtrToStringAuto($BSTR)""
for /f "usebackq delims=" %%p in (`%psCommand%`) do set oldpass=%%p
if not "%oldpass%"=="%password%" goto :FAIL
:ENTERNEW
color 8F
cls
echo.
set "newpass=""
Set /P "=New Password:" < Nul
set "psCommand=powershell -Command "$pword = read-host -AsSecureString ; ^
    $BSTR=[System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($pword); ^
        [System.Runtime.InteropServices.Marshal]::PtrToStringAuto($BSTR)""
for /f "usebackq delims=" %%p in (`%psCommand%`) do set newpass=%%p
set newpass=%newpass:"=%
if "%newpass%"=="" (
    echo.
    echo Invalid new password, please enter new password again.
    CHOICE /C X /T 1 /D X > nul
    goto :ENTERNEW
)
if exist "password.txt" attrib -h -s "password.txt"
echo>password.txt %newpass%
echo.
set "passtipp=""
set /p "passtipp=New tipp:"
set passtipp=%passtipp:"=% 
if exist "tipp.txt" attrib -h -s "tipp.txt"
if not "%passtipp%"=="" (
    echo>tipp.txt %passtipp%
) else (
    del "tipp.txt" 
)
goto :SETPASS 

:END
color
EndLocal
exit

Answer 1

唯一的方法：

if "%passtipp%"=="" (echo(>tipp.txt) else (echo>tipp.txt %passtipp%)

说明：请查看我对其他答案的所有评论（目前），请...

Answer 2

您的问题的根本原因是您将数据重定向到文件的语法是错误的。当echo自行运行时，它会输出echo是ON还是OFF。所以当你有像echo>password.txt 1234这样的行时，你会说＆＃34;取echo的输出并将其重定向到password.txt 1234＆＃34;。

应该做的是echo 1234>password.txt，它会将字符串1234重定向到password.txt。

然后为tipp.txt执行相同的操作。

另外，我觉得有必要指出你要找的那个词是＆＃34; tip，＆＃34;不是＆＃34; tipp。＆＃34;

Answer 3

要在回显空白行时禁止“ECHO已关闭”文字，请使用尾随点将echo更改为echo.。您的脚本已经为控制台的空白行执行此操作。同样适用于重定向到文件。

例如，如果％passtip％变量为空，则此行会将“ECHO关闭”放入tipp.txt：

echo>tipp.txt %passtipp%

此行将导致tipp.txt为空：

>tipp.txt echo.%passtipp%

将echo的所有实例附加到尾随标点符号通常是安全的。如果路径中有一个名为“echo”的文件，则表单echo.可能会出现问题;在这种情况下，更安全的替代方案是echo(。

而不是不打印任何批处理文件打印回显是关闭

3 个答案: