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Write-Warning - PowerShell 1.0

Microsoft Windows PowerShell is a command-line shell and scripting tool based on the Microsoft .NET Framework. It is designed for system administrators, engineers and developers to control and automate the administration of Windows and applications.

More than hundred command-line tools (so called "cmdlets") can be used to perform system administration tasks and Windows Management Instrumentation (WMI). These cmdlets are easy to use, with standard naming conventions and common parameters, and standard tools for piping, sorting, filtering, and formatting data and objects.


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-message string
       The warning message to send to the host.
       {may be piped}

       -Verbose, -Debug, -ErrorAction, -ErrorVariable, -OutVariable.

The action of Write-Warning is dependent on the value of $WarningPreference
"Continue" = Show the message on the console [this is the Default action]
"SilentlyContinue" = Do not show the message.
"Stop" = Show the message and then halt.
"Inquire" = Prompt the user.

Write a warning message:

PS C:\>$WarningPreference = "Continue"
PS C:\>Write-Verbose "The quick brown fox."