SharePoint WSP-Solution Deployment powershell commands

Install SharePoint solutions to All Web Applications

Install-SPSolution -Identity <SolutionName> -AllWebApplications -GACDeployment
GACDeployment is the parameter that enables SharePoint Server 2010 to deploy the assemblies in the global assembly cache.

Install SharePoint solutions to Specific Web Application

Install-SPSolution <SolutionName> –WebApplication <site url>

Deploy SharePoint solutions

Add-SPSolution E:\YourSharePointSolution.wsp

For sandboxed solutions you should use Add-SPUserSolution instead of the Add-SPSolution

To retract and remove a solution, use the following commands:

Uninstall-SPSolution –Identity  SharePointSolution.wsp –WebApplication http://webapp

Remove-SPSolution–Identity SharePointSolution.wsp