如何写一个批处理，把命令加到host文件里

系统的hosts文件吗？，把域名和ip写进去？

@echo off

set /p url=请输入域名地址：

set /p ip=请输入IP地址：

set hosts=%systemroot%\System32\drivers\etc\hosts

attrib -h -s -r "%hosts%"

(echo %ip%    %url%)>>"%hosts%"

attrib +h +r +s "%hosts%"

ipconfig /flushdns

pause

我以前也做过修改过hosts域名解析文件，下面给你看个范例把

@echo off &title Photoshop CS4\5 联网后注册码无效解决方案

echo 请按任意键执行此方案……

pause>nul

set lj="%systemroot%\System32\drivers\etc\hosts"

echo # Copyright (c) 1993-2006 Microsoft Corp.>%lj%

echo #>>%lj%

echo # This is a sample HOSTS file used by Microsoft TCP/IP for Windows.>>%lj%

echo #>>%lj%

echo # This file contains the mappings of IP addresses to host names. Each>>%lj%

echo # entry should be kept on an individual line. The IP address should>>%lj%

echo # be placed in the first column followed by the corresponding host name.>"%lj%

echo # The IP address and the host name should be separated by at least one>>%lj%

echo # space.>>%lj%

echo #>>%lj%

echo # Additionally, comments (such as these) may be inserted on individual>>%lj%

echo # lines or following the machine name denoted by a '#' symbol.>>%lj%

echo #>>%lj%

echo # For example:>>%lj%

echo #>>%lj%

echo # 102.54.94.97 rhino.acme.com # source server>>%lj%

echo # 38.25.63.10 x.acme.com # x client host>>%lj%

echo.>>%lj%

echo 127.0.0.1 localhost>>%lj%

echo ::1 localhost>>%lj%

echo 127.0.0.1 activate.adobe.com >>%lj%

echo 127.0.0.1 practivate.adobe.com >>%lj%

echo 127.0.0.1 ereg.adobe.com >>%lj%

echo 127.0.0.1 activate.wip3.adobe.com >>%lj%

echo 127.0.0.1 wip3.adobe.com >>%lj%

echo 127.0.0.1 3dns-3.adobe.com >>%lj%

echo 127.0.0.1 3dns-2.adobe.com >>%lj%

echo 127.0.0.1 adobe-dns.adobe.com >>%lj%

echo 127.0.0.1 adobe-dns-2.adobe.com >>%lj%

echo 127.0.0.1 adobe-dns-3.adobe.com >>%lj%

echo 127.0.0.1 ereg.wip3.adobe.com >>%lj%

echo 127.0.0.1 activate-sea.adobe.com >>%lj%

echo 127.0.0.1 wwis-dubc1-vip60.adobe.com >>%lj%

echo 127.0.0.1 activate-sjc0.adobe.com >>%lj%

echo 方案执行完毕！请按回车键退出……

pause>nul

这样就可以达到修改hosts文件的目的，如果是在Vista或WIN7下，要用管理员身份运行，让批处理得到足够的修改权限。

好了，就这样

一大堆代码啊，只能帮到你一部分

1.如何解决第一行的问题？

echo.

echo.可实现打印空行

2。你为什么不适用>>对hosts文件进行追加，而是用了copy追加。

3.貌似域名解析不能实现对端口的区分解析（不太确定，你可以测试一下）.

4.可以是用type hosts|findstr XXXXXX 来判断hosts文件中是否已存在你的目标行。

5.箭头的问题没看出来是咋出现的，抱歉。

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