How to list all the sub-sites and the Site Collections within a SharePoint Web Application using Powershell

PowerShell script helpful for getting all the sub-sites and the Site Collections within a SharePoint Web Application.

Get-SPWebApplication https://sp2010.spdev.com | Get-SPSite -Limit All | Get-SPWeb -Limit All | Select Title, URL, ID, ParentWebID | Export-CSV E:\InfoAllSites.csv -NoTypeInformation

set-executionpolicy allsigned

set-executionpolicy remotesigned

set-executionpolicy unrestricted