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现在很多操作系统都开始使用window7 了，编程的人员也要开始跟上了，
Windows7环境变量与路径的对应表 如下：
环境变量                                             路径
 
%ALLUSERSPROFILE%                     C:\ProgramData
%APPDATA%                                    C:\Users\用户名\AppData\Roaming
%COMMONPROGRAMFILES%            C:\Program Files\Common Files
%COMMONPROGRAMFILES(x86)%    C:\Program Files (x86)\Common Files
%COMSPEC%                                   C:\Windows\System32\cmd.exe
%HOMEDRIVE%和%SystemDrive%   C:
%HOMEPATH%                                  C:\Users\用户名
%LOCALAPPDATA%                           C:\Users\用户名\AppData\Local
%PROGRAMDATA%                             C:\ProgramData
%PROGRAMFILES%                             C:\Program Files
%PROGRAMFILES(X86)%                    C:\Program Files (x86)
%PUBLIC%                                         C:\Users\Public
%SystemRoot%                                  C:\Windows
%TEMP%和%TMP%                             C:\Users\用户名\AppData\Local\Temp
%USERPROFILE%                                C:\Users\用户名
%WINDIR%                                          C:\Window