Question

使用Powershell 5.1，我试图在以下位置创建注册表值：
HKLM:\SOFTWARE\Classes\.
（注释尾随期）

很遗憾，Set-ItemProperty似乎忽略了结尾。并在以下位置创建值：
HKLM:\SOFTWARE\Classes
代替。

我以管理员身份运行Powershell ISE，并测试了各种引号，Path和LiteralPath，反引号转义和尾随/均无效。

我尝试在不同的键下尝试以下操作，以防Classs出现任何异常...

$PSVersionTable.PSVersion

New-Item -Path 'HKLM:\SOFTWARE\aTest\.' -ItemType RegistryKey -Force -ErrorAction SilentlyContinue > $null
New-Item -Path 'HKLM:\SOFTWARE\aTest\`.' -ItemType RegistryKey -Force -ErrorAction SilentlyContinue > $null

Set-ItemProperty -LiteralPath HKLM:\SOFTWARE\aTest\.   -Name 'Test01' -Value 'emptyFile' -Verbose;
Set-ItemProperty -LiteralPath 'HKLM:\SOFTWARE\aTest\.' -Name 'Test02' -Value 'emptyFile' -Verbose;
Set-ItemProperty -LiteralPath "HKLM:\SOFTWARE\aTest\." -Name 'Test03' -Value 'emptyFile' -Verbose;

Set-ItemProperty -Path HKLM:\SOFTWARE\aTest\.   -Name 'Test04' -Value 'emptyFile' -Verbose;
Set-ItemProperty -Path 'HKLM:\SOFTWARE\aTest\.' -Name 'Test05' -Value 'emptyFile' -Verbose;
Set-ItemProperty -Path "HKLM:\SOFTWARE\aTest\." -Name 'Test06' -Value 'emptyFile' -Verbose;

Set-ItemProperty -LiteralPath HKLM:\SOFTWARE\aTest\`.   -Name 'Test07' -Value 'emptyFile' -Verbose;
Set-ItemProperty -LiteralPath 'HKLM:\SOFTWARE\aTest\`.' -Name 'Test08' -Value 'emptyFile' -Verbose;
Set-ItemProperty -LiteralPath "HKLM:\SOFTWARE\aTest\`." -Name 'Test09' -Value 'emptyFile' -Verbose;

Set-ItemProperty -Path HKLM:\SOFTWARE\aTest\`.   -Name 'Test10' -Value 'emptyFile' -Verbose;
Set-ItemProperty -Path 'HKLM:\SOFTWARE\aTest\`.' -Name 'Test11' -Value 'emptyFile' -Verbose;
Set-ItemProperty -Path "HKLM:\SOFTWARE\aTest\`." -Name 'Test12' -Value 'emptyFile' -Verbose;

Set-ItemProperty -LiteralPath HKLM:\SOFTWARE\aTest\.\   -Name 'Test13' -Value 'emptyFile' -Verbose;
Set-ItemProperty -LiteralPath 'HKLM:\SOFTWARE\aTest\.\' -Name 'Test14' -Value 'emptyFile' -Verbose;
Set-ItemProperty -LiteralPath "HKLM:\SOFTWARE\aTest\.\" -Name 'Test15' -Value 'emptyFile' -Verbose;

Set-ItemProperty -Path HKLM:\SOFTWARE\aTest\.\   -Name 'Test16' -Value 'emptyFile' -Verbose;
Set-ItemProperty -Path 'HKLM:\SOFTWARE\aTest\.\' -Name 'Test17' -Value 'emptyFile' -Verbose;
Set-ItemProperty -Path "HKLM:\SOFTWARE\aTest\.\" -Name 'Test18' -Value 'emptyFile' -Verbose;

，但输出显示它忽略。除非从字面上转义（当它创建一个带有反引号的键时...

Major  Minor  Build  Revision
-----  -----  -----  --------
5      1      17134  228
VERBOSE: Performing the operation "Set Property" on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\aTest Property: Test01".
VERBOSE: Performing the operation "Set Property" on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\aTest Property: Test02".
VERBOSE: Performing the operation "Set Property" on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\aTest Property: Test03".
VERBOSE: Performing the operation "Set Property" on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\aTest Property: Test04".
VERBOSE: Performing the operation "Set Property" on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\aTest Property: Test05".
VERBOSE: Performing the operation "Set Property" on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\aTest Property: Test06".
VERBOSE: Performing the operation "Set Property" on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\aTest Property: Test07".
VERBOSE: Performing the operation "Set Property" on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\aTest\`. Property: Test08".
VERBOSE: Performing the operation "Set Property" on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\aTest Property: Test09".
VERBOSE: Performing the operation "Set Property" on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\aTest Property: Test10".
VERBOSE: Performing the operation "Set Property" on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\aTest\`. Property: Test11".
VERBOSE: Performing the operation "Set Property" on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\aTest Property: Test12".
VERBOSE: Performing the operation "Set Property" on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\aTest\ Property: Test13".
VERBOSE: Performing the operation "Set Property" on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\aTest\ Property: Test14".
VERBOSE: Performing the operation "Set Property" on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\aTest\ Property: Test15".
VERBOSE: Performing the operation "Set Property" on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\aTest\ Property: Test16".
VERBOSE: Performing the operation "Set Property" on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\aTest\ Property: Test17".
VERBOSE: Performing the operation "Set Property" on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\aTest\ Property: Test18".

请问我想念什么？

Answer 1

考虑以下示例：

PS D:\PShell> New-Item -Path 'HKLM:\SOFTWARE\Test\.' -ItemType RegistryKey -WhatIf
What if: Performing the operation "New Item" 
         on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\Test".

PS D:\PShell> New-Item -Path 'HKLM:\SOFTWARE\Test\..' -ItemType RegistryKey -WhatIf
What if: Performing the operation "New Item" 
         on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE".

PS D:\PShell> (Resolve-Path -LiteralPath 'HKLM:\Software\Test\.').Path
HKLM:\Software\Test

PS D:\PShell> (Resolve-Path -LiteralPath 'HKLM:\Software\Test\..').Path
HKLM:\Software

很明显，Powershell的Registry提供程序采用一个单独的时间段（也是两倍的时间段）用作关键路径组件，类似于类似的FileSystem的目录组件，如https://drive.google.com/drive/folders/1LH79C0JtpBBpAMdKqNjKfYfj3KTvLgAh?usp=sharing中所述：

在路径中使用句点作为目录组件来表示当前目录，例如".\temp.txt"。了解更多信息，   参见Naming Conventions。

使用两个连续的句点（ .. ）作为路径中的目录组件，以表示当前目录的父目录   "..\temp.txt"。有关更多信息，请参见Paths。

但是，Paths（包括.和..键）请参见以下示例：

==> reg query "HKCU\Software\Test\."

HKEY_CURRENT_USER\Software\Test\.
    value_inside_PeriodKey    REG_SZ


==> reg add "HKCU\Software\Test\.."
The operation completed successfully.

==> reg query "HKCU\Software\Test"

HKEY_CURRENT_USER\Software\Test
    SomeTestString    REG_SZ    Test String

HKEY_CURRENT_USER\Software\Test\.
HKEY_CURRENT_USER\Software\Test\..

出于明显的原因（安全性），请注意在后面的示例中使用HKCU代替HKLM。

Set-ItemProperty忽略Trailing。

1 个答案: