Update all views sort order in a list using powershell

I have a column "Employee Name" in my Lists/Library of my sitecollection ,

I need to update Sort order of all views of that  lists and library to be sort alphabetically by "Employee Name" .

I have already some filters applied on these views.I dont want these to get effected.I want to change only the sort order to be based on "Employee Name" column.

Any pointers on how to achieve this by Powershell will be helpful