Add-PSSnapin "Microsoft.SharePoint.PowerShell"#Get SSA and then create a new content source$SSA = Get-SPEnterpriseSearchServiceApplication -Identity "SSA"  New-SPEnterpriseSearchCrawlContentSource -SearchApplication $SSA -Type File -name 'gtr' -StartAddresses 'file://wac/fileshare'#Get content source and start crawl$ContentSource = $SSA | Get-SPEnterpriseSearchCrawlContentSource -Identity "gtr" $ContentSource.StartFullCrawl()#Verify the status of all content sourcesGet-SPEnterpriseSearchCrawlContentSource -SearchApplication $SSA