How to do it...

1. You use the Get-Command, and Tee-Object cmdlets to retrieve both the collection of PowerShell commands and the number of cmdlets into PowerShellvariables before installing the RSAT:

      $CountOfCommandsBeforeRSAT = Get-Command |
          Tee-Object -Variable 'CommandsBeforeRSAT' |
              Measure-Object
      '{0} commands' -f $CountOfCommandsBeforeRSAT.count
  

1. Examine the objects returned by Get-Command:

      $CommandsBeforeRSAT | Get-Member |
       Select-Object -ExpandProperty TypeName -Unique
  

1. View commands in Out-GridView:

      $CommandsBeforeRSAT |
         Select-Object -Property Name, Source, CommandType |
            Sort-Object -Property Source, Name |
               Out-GridView

1. Store the collection of PowerShell modules and a count into variables as well:

      $CountOfModulesBeforeRSAT = Get-Module -ListAvailable |
         Tee-Object -Variable 'ModulesBeforeRSAT' |
             Measure-Object 
                '{0} commands' -f $CountOfModulesBeforeRSAT.count

1. View modules in Out-GridView:

     $ModulesBeforeRSAT |
          Select-Object -Property Name -Unique |
             Sort-Object -Property Name |
                Out-GridView
  

1. Review the RSAT Windows Features available and their installation status:

       Get-WindowsFeature -Name RSAT*

1. Install RSAT with sub features and management tools:

      Install-WindowsFeature -Name RSAT -IncludeAllSubFeature `
                             -IncludeManagementTools
  

1. Now that RSAT features are installed, see what commands are available:

      $CountOfCommandsAfterRSAT = Get-Command | 
         Tee-Object -Variable 'CommandsAfterRSAT' |
             Measure-Object 
       '{0} commands' -f $CountOfCommandsAfterRSAT.count

1. View commands in Out-GridView:

     $CommandsAfterRSAT |
        Select-Object -Property Name, Source, CommandType |
           Sort-Object -Property Source, Name |
              Out-GridView

1. Now check how many modules are available:

      $CountOfModulesAfterRSAT = Get-Module -ListAvailable |
         Tee-Object -Variable 'ModulesAfterRSAT' |
             Measure-Object
      '{0} commands' -f $CountOfModulesAfterRSAT.count

1. View modules in Out-GridView:

      $ModulesAfterRSAT | Select-Object -Property Name -Unique |
         Sort-Object -Property Name |
            Out-GridView

1. Store the list of commands into an XML file for later research:

      $CommandsAfterRSAT |
         Export-Clixml `
            -Path $env:HOMEPATH\Documents\WS2016Commands.XML"