如题:,判断hosts文件最后一行是否换行回车(空行)
如果有空行,则再其他 继续追加 屏蔽网址;
如果没有空行,则应该先写入一个 换行回车符(空一行),继续追加 屏蔽网址。。。。
写入空行代码我知道:- echo.>>%windir%\system32\drivers\etc\hosts
复制代码 关键是如何判断 文本文件最后一行是否 有 换行回车(空白行)的判断语句,我不会,还望大家不吝赐教,谢谢!
避免出现以下情形:
如何避免 在 需要对多个网址进行屏蔽中,第一个网址(下面代码中“127.0.0.1 www.baidu.com”) 屏蔽失效。- # Copyright (c) 1993-2009 Microsoft Corp.
- #
- # This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
- #
- # This file contains the mappings of IP addresses to host names. Each
- # entry should be kept on an individual line. The IP address should
- # be placed in the first column followed by the corresponding host name.
- # The IP address and the host name should be separated by at least one
- # space.
- #
- # Additionally, comments (such as these) may be inserted on individual
- # lines or following the machine name denoted by a '#' symbol.
- #
- # For example:
- #
- # 102.54.94.97 rhino.acme.com # source server
- # 38.25.63.10 x.acme.com # x client host
-
- # localhost name resolution is handled within DNS itself.
- # 127.0.0.1 localhost
- # ::1 localhost 127.0.0.1 www.baidu.com
- 127.0.0.1 www.tencent.com
- 127.0.0.1 www.qq.com
复制代码
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