Using $host to Examine the PowerShell Host Interface

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In this video, Trevor Sullivan describes how to use the automatic variable, $host, works and how to use it to build a PowerShell host interface. Terminal user interfaces are useful tools, particularly when working with remote servers that don’t have a GUI available. You can write these terminal tools in a number of languages, Trevor is using PowerShell.

Trevor first prints out the $host variable and digs into the command with Get-Member. He then accesses the RawUI class in the PowerShell SDK to show off the UI properties you can use to build your own interface.

He then uncovers useful methods in the $Host.UI.RawUI class that you can use to create buffers with the SetBufferContents method and move cursors with the CursorPosition property.

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