中国DOS联盟

帮助中哪里看不懂就再问，至少表明你曾经看过帮助。

主要是set a=!a: - =(!这个是将空格-空格做什么操作呢？=（什么意思?其他基本明白了！

感谢各位大侠的帮助，让我对set命令有了进一步的了解！

Originally posted by tireless at 2008-12-15 14:44:

@echo off & setlocal EnableDelayedExpansion

for /f "delims=" %%a in (test.txt) do (

  set str=%%a

  for /f "delims=" %%i in ("!str:*:=!") do set L=!str:%% ... 




看的有点晕，能否详细讲解下呢，呵呵。

英文版的是否更清楚呢？

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.

就是把等号左边的字符串替换为等号右边的字符串，现在清楚不？

刚才有仔细的研究的，终于理解了。谢谢版主和其他热心的朋友了。

set a=!a: - =(!
将a变量里面含有“ - ”的改成"(",当然这个"("随便你用什么,为了避免其他的问题出现我就随便弄了个
只能说a是个容器,,
b是为了判断是不是找到了你要的结果

Originally posted by HAT at 2008-12-15 03:28 PM:
英文版的是否更清楚呢？

Environment variable substitution has been enhanced as follows:

%PATH:str1=str2%

would expand the PATH environment variable, s ...

还是HAT 牛X ,, 貌似英文的是清楚些了