Environmental varibles

List of Windows environment variables
AllUsersProfile AppData CD ClientName CmdCmdLine CmdExtVersion CommonProgramFiles ComputerName ComSpec Date ErrorLevel HomeDrive HomePath LocalAppData LogonServer Number Of Processors OS Path PathExt Processor Architecture Processor Identifier Processor Level Processor Revision ProgramFiles Prompt Random SessionName SystemDrive SystemRoot Temp Time Tmp UserDnsDomain UserDomain UserName UserProfile WinDir