Get Farm GUID Uisng Powershell

Get Build version


PS C:\Users\Administrator> (Get-SPFarm).BuildVersion

Major  Minor  Build  Revision
-----  -----  -----  --------
15     0      4569   1000


Get Configuration Database Name

PS C:\Users\Administrator> (Get-SPFarm).name
SharePoint_Config_swcc


Get FARM GUID


PS C:\Users\Administrator> (Get-SPFarm).id

Guid
----
f0b6ac34-919f-4ff8-9960-c2ea9ace7319