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Mike0101
Asked: 2024-11-16 04:01:28 +0800 CST

如果注册表项为空则删除（一行代码）

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我正在尝试执行一行批处理命令，如果 Key 为空，它将删除该 Key。以下是 2 个应该可行但出于某种奇怪的原因却行不通的解决方案。😩

For /f "tokens=*" %%a in ('Reg Query "HKCU\Software\RandomKey" 2^>NUL ^| FindStr /l /i /c:"\\Software\\RandomKey\\"') do (EXIT) ^& Reg Delete "HKCU\Software\RandomKey" /f 1>NUL

For /f "tokens=*" %%a in ('Reg Query "HKCU\Software\RandomKey" 2^>NUL ^| FindStr /l /i /c:"\\Software\\RandomKey\\"') do Set "FSK=1" ^& If Not "%FSK%"=="1" Reg Delete "HKCU\Software\RandomKey" /f 1>NUL
batch-file

1 个回答

  1. Best Answer

    这是一个测试：

    @ECHO OFF
SETLOCAL

FOR %%y IN ("RandomKey" "GIGABYTE" "Notepad++" "7-zip") DO (
 ECHO testing "%%~y"
 rem show Reg Query output for demonstration
 Reg Query "HKEY_LOCAL_MACHINE\SOFTWARE\%%~y" 2>&1
 Reg Query "HKEY_LOCAL_MACHINE\SOFTWARE\%%~y" 2>&1|FINDSTR /b /c:"    (Default)">nul&IF NOT ERRORLEVEL 1 ECHO DO whatever
 echo/
) 
GOTO :EOF

    在我的系统上：

    "RandomKey" Doesn't exist; error message redirected to stdout to avoid clutter

"GIGABYTE" Exists, but is not empty (has subkeys)

"Notepad++" Is empty and generates the message

"7-zip" is not empty.

    该命令在行首findstr查找/c:引号之间的常量字符串（注意前导 4 个空格且区分大小写） 。/b

    我的机器上的结果

    testing "RandomKey"
ERROR: The system was unable to find the specified registry key or value.

testing "GIGABYTE"

HKEY_LOCAL_MACHINE\SOFTWARE\GIGABYTE\Control Center
HKEY_LOCAL_MACHINE\SOFTWARE\GIGABYTE\DramInfos
HKEY_LOCAL_MACHINE\SOFTWARE\GIGABYTE\GBT_GCC_Lib

testing "Notepad++"

HKEY_LOCAL_MACHINE\SOFTWARE\Notepad++
    (Default)    REG_SZ    C:\Program Files\Notepad++

DO whatever

testing "7-zip"

HKEY_LOCAL_MACHINE\SOFTWARE\7-zip
    Path64    REG_SZ    C:\Program Files\7-Zip\
    Path    REG_SZ    C:\Program Files\7-Zip\
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