Write-Warning

Writes a warning message. PowerShell reference

From the PowerShell reference 1 parameter

What it does

from the PowerShell reference, CC BY 4.0

Writes a warning message. The Write-Warning cmdlet writes a warning message to the PowerShell host. The response to the warning depends on the value of the user's $WarningPreference variable and the use of the WarningAction common parameter.

Write-Warning [-Message] <String> [<CommonParameters>]

Write a warning message

Write-Warning "This is only a test warning."Identify

Pass a string to Write-Warning

$w = "This is only a test warning."
$w | Write-Warning

Identify

Set the $WarningPreference variable and write a warning

PS> $WarningPreference
Continue
PS> Write-Warning "This is only a test warning."
This is only a test warning.
PS> $WarningPreference = "SilentlyContinue"
PS> Write-Warning "This is only a test warning."
PS> $WarningPreference = "Stop"
PS> Write-Warning "This is only a test warning."
WARNING: This is only a test warning.
Write-Warning : Command execution stopped because the shell variable "WarningPreference" is set to Stop.
At line:1 char:14
+ Write-Warning <<<< "This is only a test warning."

Identify

Set the WarningAction parameter and write a warning

PS> Write-Warning "This is only a test warning." -WarningAction Inquire
WARNING: This is only a test warning.
Confirm
Continue with this operation?
[Y] Yes [A] Yes to All [H] Halt Command [S] Suspend [?] Help (default is "Y"):

Identify

Its page in the reference: Write-Warning.

Parameters

1 in the PowerShell reference

-MessageSpecifies the warning message.

Write-Warning

What it does

Parameters

See also