How do I set a variable if a command line parameter is "present" in powershell?

Question

If I define the command line parameters as such:

[CmdletBinding()]
Param(
[Parameter(Mandatory=$False)]
[string[]$myString
)

How do I evaluate if $myString is present and create a variable to represent yes or no?

Many thanks.

Possible duplicate of Check for existence of parameter in function — iRon
– iRon, Commented Feb 20, 2019 at 6:54

steven · Accepted Answer · 2019-02-20 05:45:26Z

2

You could simply do a null check on the variable:

if ($myString) {
 'set true variable' 
} else { 
 'set false variable' 
}

answered Feb 20, 2019 at 5:45

steven

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