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PowerShell: the automatic variable $host

The type of $host is System.Management.Automation.Internal.Host.InternalHost: 
PS C:\> $host.GetType().FullName
System.Management.Automation.Internal.Host.InternalHost
$host refers to the same object that also get-host returns.

Change the window's title

$host.ui.rawUI.windowTitle = 'Foo bar baz'

See also

$host.ui and $host.ui.rawUI
Other automatic variables
PowerShell host

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