以下代码直接复制到一个.bat文件里就可以直接使用，大家可以根据自己的需要增加和修改相应的路径。

ps: path环境变量是在保留原环境变量的基础上添加新的路径。

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@echo off  

echo  正在安装请稍后。。。


set javahome=D:\loongson\Java\jdk1.6.0_33  
reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v JAVA_HOME /t reg_sz /d "%javahome%" /f


set  class_path= .;D:\loongson\Java\jdk1.6.0_33\lib\dt.jar;D:\loongson\Java\jdk1.6.0_33\lib\tools.jar;
reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v CLASSPATH /t reg_sz /d "%class_path%" /f   /f


set  CPLUSINCLUDEPATH=D:/loongson/cygwin/lib/gcc/i686-pc-cygwin/3.4.4/include/c++;D:/loongson/cygwin/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/backward;D:/loongson/cygwin/lib/gcc/i686-pc-cygwin/3.4.4/include
reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v CPLUS_INCLUDE_PATH /t reg_sz /d "%cplusincludepath%" /f   /f


set cincludedepath=D:\loongson\cygwin\usr\include
reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v C_INCLUDEDE_PATH /t reg_sz /d "%cincludedepath%" /f   /f


set jtagip=127.0.0.1
reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v JTAG_IP /t reg_sz /d "%jtagip%" /f   /f


set librarypath=D:\loongson\cygwin\lib    
reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v LIBRARY_PATH /t reg_sz /d "%librarypath%" /f   /f


set term=linux      
reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v TERM /t reg_sz /d "%term%" /f   /f


set terminfo=./terminfo      
reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v TERMINFO /t reg_sz /d "%terminfo%" /f   /f


set pathnew=D:\loongson\Perl\site\bin;D:\loongson\Perl\bin;D:\loongson\mips-4.3\bin;D:\loongson\cygwin\bin;D:\loongson\Java\jdk1.6.0_33\bin
reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v PATH /t reg_sz /d ".;%path%;%pathnew%" /f   /f


echo.     
color 17  
echo ************ 安装 结束，请重启计算机 ***********  
echo.  
echo 请按 任意键 退出!  
pause>nul