| %ALLUSERSPROFILE% | C:\Documents and Settings\All Users | 
|---|---|
| %APPDATA% | C:\Documents and Settings\{username}\Application Data | 
| %COMPUTERNAME% | {computername} | 
| %COMSPEC% | C:\Windows\System32\cmd.exe | 
| %HOMEDRIVE% | C: | 
| %HOMEPATH% | \Documents and Settings\{username} | 
| %PATH% | C:\Windows\System32\;C:\Windows\;C:\Windows\System32\Wbem | 
| %PATHEXT% | .COM; .EXE; .BAT; .CMD; .VBS; .VBE; .JS ; .WSF; .WSH | 
| %PROGRAMFILES% | Directory containing program files, usually C:\Program Files | 
| %PROMPT% | Code for current command prompt format. Code is usually $P$G | 
| %SYSTEMDRIVE% | The drive containing the Windows XP root directory, usually C: | 
| %SYSTEMROOT% | The Windows XP root directory, usually C:\Windows | 
| %TEMP% and %TMP% | C:\DOCUME~1\{username}\LOCALS~1\Temp | 
| %USERNAME% | {username} | 
| %USERPROFILE% | C:\Documents and Settings\{username} | 
| %WINDIR% | C:\Windows | 
| %DATE% | Current date in the format determined by the Date command | 
|---|---|
| %TIME% | Current time in the format determined by the Time command | 
| %CD% | Current directory with its full path | 
| %ERRORLEVEL% | Number defining exit status of a previous command or program | 
| %RANDOM% | Random number between 0 and 32767 | 
 
			
Windows XP Environment variables
Windows 7 Environment variables
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