Metalogix Content Matrix can generate PowerShell script for you, for any migration action that is available through it. The below cmdlets are used in the generated PowerShell script, but can also be used to write your own script, should you desire to do so. For more information on each cmdlet, simply type get-help [cmdlet]. For example, if you want more information on Copy-MLSharePointList cmdlet you would enter get-help Copy-MLSharePointList, followed by the Enter (return) key.
Below is a list of the available cmdlets (and their parameters), broken up into the available commands for each snap-in.