Batcher

请把所有的需求都更新到顶楼，以便他人查看。

Batcher

1、代码五既适合大文本又适合小文本，而且对于大文本效率较高；

2、set命令的帮助文档里面有解释：

Environment variable substitution has been enhanced as follows:

    %PATH:str1=str2%

would expand the PATH environment variable, substituting each occurrence
of "str1" in the expanded result with "str2".  "str2" can be the empty
string to effectively delete all occurrences of "str1" from the expanded
output.  "str1" can begin with an asterisk, in which case it will match
everything from the beginning of the expanded output to the first
occurrence of the remaining portion of str1.

3、可以使用sed/change等第三方命令行工具（其实它们也是通过临时文件来实现的，只是没让你看到过程而已）；

4、你不是已经测试过了么？