是否默认启用受限语言模式？

Question

默认情况下，Powershell 中是否启用了约束语言模式？在最新的 Windows 10 FCU 版本中，是最新的

Answer 1

不，您只需设置一个属性即可将 PowerShell 会话置于受限语言模式：

PS C:\> $ExecutionContext.SessionState.LanguageMode
FullLanguage

PS C:\> $ExecutionContext.SessionState.LanguageMode = "ConstrainedLanguage"

PS C:\> $ExecutionContext.SessionState.LanguageMode
ConstrainedLanguage


PS C:\> [System.Console]::WriteLine("Hello")

Cannot invoke method. Method invocation is supported only on core types in this language mode.
At line:1 char:1
+ [System.Console]::WriteLine("Hello")
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : MethodInvocationNotSupportedInConstrainedLanguage

更多详细信息，请阅读此官方文档：什么是 PowerShell 约束语言？ https://blogs.msdn.microsoft.com/powershell/2017/11/02/powershell-constrained-language-mode/