OneLiners for PowerShell with SharePoint for Admin not available in Central Administration

Get-SPShellAdmin
#View Site Administration Information which cannot be viewed from UI
Get-SPSiteAdministration -Identity "http://w15-sp" | format-list
#View UsersCount for a site
Get-SPContentDatabase -WebApplication "http://intranet.contoso.com"|Get-SPSiteAdministration | select Url,Title,UsersCount
#View max storage used
Get-SPSiteAdministration -Identity "http://hrweb.contoso.com"| Select -Property Url, OwnerLoginName,@{Name="Storage";Expression={$_.Quota.StorageMaximumLevel}}
#View Sites owned by garthf   
Get-SPSiteAdministration -Filter {$_.Owner -like "*contoso\garthf*"} -Limit 50
#View the total disk used for all web application
Get-SPWebApplication | Get-SPSiteAdministration -Limit All|ForEach-Object {$sum=0}{ $sum+=$_.DiskUsed }{$sum / 1GB}
#View Url of all site collections in a Web Application
Get-SPWebApplication "http://w15-sp" | Get-SPSiteAdministration -Limit ALL | Select URL
#Get all sites starting with http://w15-sp
Get-SPSiteAdministration -Identity "http://w15-sp*" -RegEx -Limit All