PowerShell commands to Install deploy & Update solutions for SharePoint 2010

    1. Add a WSP Solution package : 

 Add-SPSolution -LiteralPath  File-Path/filename.wsp

2. Install a WSP Solution package : 

Install-SPSolution -Identity filename.wsp –GACDeployment

3. Update a WSP Solution package :

Update-SPSolution –Identity  filename.wsp -LiteralPath File-Path/filename.wsp –GACDeployment