[Windows] System Environment Variables

Variable>	Description	Example
%ALLUSERSPROFILE%	All users profile directoy
%APPDATA%	Directory for saving application's configuration	C:\Users\Administrator\AppData\Roaming
%COMMONPROGRAMFILES%	Common Program Files directory	C:\Program Files\Common Files
%COMPUTERNAME%	Workstation name	DORBAE_LAPTOP
%COMSPEC%	Directory path where cmd.exe is located	C:\Windows\system32\cmd.exe
%HOMEDRIVE%	Local workstation drive related with user home direcoty	C:
%HOMEPATH%	User home directory full path	\Users\Administrator
%NUMBER_OF_PROCESSORS%	Count of logical processors\	8
%OS%	Operation system's name	Windows_NT
%PROCESSOR_ARCHITECTURE%	Kind of workstation's processor	AMD64
%PROCESSOR_IDENTIFIER%	Identifier of processor	Intel64 Family 6 Model 60 Stepping 3, GenuineIntel
%PROCESSOR_LEVEL%	Level of processor	6
%PROCESSOR_REVISION%	Revision of processor	3c03
%PROGRAMFILES%	Location of program files directory	C:\Program Files
%SYSTEMDRIVE%	Drive where OS is installed	C:
%SYSTEMROOT%	Location of WINDOWS directory	C:Windows
%TEMP%	Temporary directory	C:\Users\ADMINI~1\AppData\Local\Temp
%TMP%	Temporary directory	C:\Users\ADMINI~1\AppData\Local\Temp
%USERNAME%	User's name	Administrator
%USERPROFILE%	User profile directory	C:\Users\Administrator