中国DOS联盟

我有以文本1.txt,内容如下:
c:\run.dll
c:\windows\x.png
……
想通过批处理把它变成：
“c:\run.dll”-“!:\run.dll”
”c:\windows\x.png“-"!:\windows\x.png"
……
恳求大家帮帮我吧，先谢谢各位了！

@echo off
for /f "delims=" %%i in (a.txt) do echo "%%i"-"!:%%~pnxi"
pause

谢谢，能告诉我"!:%%~pnxi"是什么意思吗？

看看帮助
for /?

In addition, substitution of FOR variable references has been enhanced.
You can now use the following optional syntax:

%~I - expands %I removing any surrounding quotes (")
%~fI - expands %I to a fully qualified path name
%~dI - expands %I to a drive letter only
%~pI - expands %I to a path only
%~nI - expands %I to a file name only
%~xI - expands %I to a file extension only
%~sI - expanded path contains short names only
%~aI - expands %I to file attributes of file
%~tI - expands %I to date/time of file
%~zI - expands %I to size of file
%~$PATH:I - searches the directories listed in the PATH
environment variable and expands %I to the
fully qualified name of the first one found.
If the environment variable name is not
defined or the file is not found by the
search, then this modifier expands to the
empty string

The modifiers can be combined to get compound results:

%~dpI - expands %I to a drive letter and path only
%~nxI - expands %I to a file name and extension only
%~fsI - expands %I to a full path name with short names only
%~dp$PATH:I - searches the directories listed in the PATH
environment variable for %I and expands to the
drive letter and path of the first one found.
%~ftzaI - expands %I to a DIR like output line

我有以文本1.txt,内容如下:
c:\sys\run.dll
c:\windows\sys\x.png
c:\6.jpg
c:\windows\system\ocx.dll
……
想让批处理自动搜索关键词sys，检测每行文字，如果发现有sys文件夹，则把它变成以sys开头的文本，如果没有检测到sys，就安原样。输出如下：
“c:\sys\run.dll”-"!:\sys\run.dll"
"c:\windows\sys\x.png"-"!:\sys\x.png"
"c:\6.jpg"-"!:\6.jpg"
"c:\windows\system\ocx.dll"-"!:\windows\system\ocx.dll"
（在第一第二行中检测到sys文件夹，在右侧!:后就紧跟sys）
（在第三第四行中未检测到sys文件夹，在右侧:后按原位置保存）