Environment Variable

%Environment Variable%
IN WINDOWS XP
IN WINDOWS VISTA

%APPDATA%
C:\Documents and Settings\{username}\Application Data
C:\Users\{username}\AppData\Roaming

%COMPUTERNAME%
{computername}
{computername}

%COMMONPROGRAMFILES%
C:\Program Files\Common Files
C:\Program Files\Common Files

%COMMONPROGRAMFILES(x86)%
C:\Program Files (x86)\Common Files
C:\Program Files (x86)\Common Files

%COMSPEC%
C:\Windows\System32\cmd.exe
C:\Windows\System32\cmd.exe

%HOMEDRIVE%
C:\
C:\

%HOMEPATH%
\Documents and Settings\{username}
\Users\{username}

%PATH%
C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;{plus program paths}
C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;{plus program paths}

%PATHEXT%
.com;.exe;.bat;.cmd;.vbs;.vbe;.js;.wsf;.wsh
.com;.exe;.bat;.cmd;.vbs;.vbe;.js;.jse;.wsf;.wsh;.msc

%PROGRAMFILES%
C:\Program Files
C:\Program Files

%PROGRAMFILES(X86)%
C:\Program Files (x86) (only in 64-bit version)
C:\Program Files (x86) (only in 64-bit version)

%PROMPT%
Code for current command prompt format. Code is usually $P$G
Code for current command prompt format. Code is usually $P$G

%SYSTEMDRIVE%
C:
C:

%SystemRoot%
The Windows directory, usually C:\Windows, formerly C:\WINNT
C:\Windows

%TEMP% and %TMP%
C:\Documents and Settings\{username}\Local Settings\Temp
C:\Users\{username}\AppData\Local\Temp

%USERNAME%
{username}
{username}

%USERPROFILE%
C:\Documents and Settings\{username}
C:\Users\{username}

%WINDIR%
C:\Windows
C:\Windows

%PUBLIC%
NONE
C:\Users\Public