Compare list of SharePoint files with on-prem file share

If you're migrating files from an on-prem file share to SharePoint, you may need to export a list of files on both sides for comparison:

1. Install PnP PowerShell:
   
   Install-Module -Name "PnP.PowerShell"
   
   
2. Connect to the SharePoint site URL:
   
   Connect-PnPOnline -Url https://company-my.sharepoint.com/sites/SharedFiles -Interactive
   
   
3. Export the SharePoint files/folders in specific directory:
   
   Get-PnPFolderItem -FolderSiteRelativeUrl "Shared Documents/Folder1" -Recursive | Export-Csv -Path C:\temp\Folder1-SharePoint.csv
   
   
4. Export the corresponding on-prem files/folders: In PowerShell on-prem, CD into the directory then:
   
   dir -Recurse | Export-Csv -Path C:\temp\Folder1-OnPrem.csv