中国DOS联盟

我有a.bat如下,显示各种参数的扩展值:

@echo off

cls

echo 1=%1

echo ~1=%~1

echo ~f1=%~f1

echo ~p1=%~p1

echo ~n1=%~n1

echo ~s1=%~s1

echo ~dp1=%~dp1

执行a "c:\afff sf\ttt.txt",显示结果如下:
1="c:\afff sf\ttt.txt"
~1=c:\afff sf\ttt.txt
~f1=c:\afff sf\ttt.txt
~p1=\afff sf\
~n1=ttt
~s1=c:\afff sf\ttt.txt
~dp1=c:\afff sf\

查看call /?,~s1是返回短格式名称,但这里返回的并不是短格式而是完整的c:\afff sf\ttt.txt,不知是何故,请教. win2000/winxp/win2003都是如此,win98好像无法解释扩展参数,带~的都返回空

注:此扩展有个限制,即要被扩展的目录存在,才能转换成短格式,否则原样返回

[ Last edited by dejoy on 2008-9-25 at 11:37 PM ]

因为你的路径及文件名还不够长

不够长?不是超过8个字符就会转成短格式了吗?那需要多长啊?

这个说法似乎不对,经测试
a "c:\sfsfsfsf kklllklll\slgkjglkjlkjo.txt"

显示结果:
1="c:\sfsfsfsf kklllklll\slgkjglkjlkjo.txt"
~1=c:\sfsfsfsf kklllklll\slgkjglkjlkjo.txt
~f1=c:\sfsfsfsf kklllklll\slgkjglkjlkjo.txt
~p1=\sfsfsfsf kklllklll\
~n1=slgkjglkjlkjo
~s1=c:\sfsfsfsf kklllklll\slgkjglkjlkjo.txt
~dp1=c:\sfsfsfsf kklllklll\

这个够长了吧,可是还没转换成短格式

[ Last edited by dejoy on 2008-9-25 at 12:37 PM ]

知道了,原来此扩展有个限制,即要被扩展的目录存在,才能转换成短格式,否则原样返回.如存在C:\Documents and Settings\Administrator\My Documents\a.txt
执行:a "C:\Documents and Settings\Administrator\My Documents\a.txt"

显示结果(正确):
1="C:\Documents and Settings\Administrator\My Documents\a.txt"
~1=C:\Documents and Settings\Administrator\My Documents\a.txt
~f1=C:\Documents and Settings\Administrator\My Documents\a.txt
~p1=\Documents and Settings\Administrator\My Documents\
~n1=a
~s1=C:\DOCUME~1\ADMINI~1\MYDOCU~1\a.txt
~dp1=C:\Documents and Settings\Administrator\My Documents\

[ Last edited by dejoy on 2008-9-25 at 11:38 PM ]