China DOS Union

D:\scripts>for /F %i in ('dir /ad /s /b') do echo %~ni | findstr "123"

D:\scripts>echo 123 | findstr "123"
Enter your code:Enter your code:Enter your code:Enter your code:Enter your code:
Enter your code:Enter your code:Enter your code:Enter your code:Enter your code:
Enter your code:Enter your code:Enter your code:Enter your code:Enter your code:
Enter your code:Enter your code:Enter your code:Enter your code:Enter your code:
Enter your code:Enter your code:Enter your code:Enter your code:Enter your code:
Enter your code:Enter your code:Enter your code:Enter your code:Enter your code:
^CEnter your code:Enter your code:Enter your code:Enter your code:Enter your cod
e:Enter your code:Enter your code:Enter your code:^C^CEnter your code:Enter your
code:^C^CERROR!!!

There is something wrong with your code. Try the following statement:
for /F %i in ('dir /ad /s /b') do (echo %~ni|findstr "123">nul && echo %~ni)

It still doesn't seem to work.

D:\scripts>for /F %i in ('dir /ad /s /b') do (echo %~ni | findstr "123" && echo %~ni )

D:\scripts>(echo 123 | findstr "123" && echo 123 )
Enter your code:Enter your code:Enter your code:Enter your code:Enter your code:
Enter your code:Enter your code:Enter your code:Enter your code:Enter your code:
Enter your code:Enter your code:Enter your code:Enter your code:Enter your code:
Enter your code:Enter your code:Enter your code:Enter your code:Enter your code:
Enter your code:Enter your code:Enter your code:Enter your code:Enter your code:
Enter your code:Enter your code:Enter your code:Enter your code:Enter your code:
Enter your code:Enter your code:Enter your code:Enter your code:Enter your code:

Why don't you just put the following code in a batch file to execute? It's quite distracting in the CMD window.
@echo off for /F %%i in ('dir /ad /s /b') do (echo %%~ni|findstr "123">nul && echo %%~ni) pause

Is your bat name findstr.bat?

LZ wants to achieve what effect??? Don't understand, is it to find the folder named 123? Or something else???

Originally posted by smileseeker at 2006-9-27 01:18:
D:\scripts>for /F %i in ('dir /ad /s /b') do echo %~ni | findstr "123"

D:\scripts>echo 123 | findstr "123"
Enter your code:Enter your code:Enter your code:Enter yo ...

It is obvious that your code is wrong. dir /ad /s /b is to find folders, and %~ni is expanded to the file name. Where is the file name? There is only the path at all.

Modify the code to:
@echo off
for /F "tokens=*" %%i in ('dir /a-d /s /b *.*') do (
echo %%~ni | findstr "123" && echo Found matching file
)
pause

Please save it as a batch file to run.

Originally posted by pengfei at 2006-9-27 09:25:


Obviously your code is wrong. dir /ad /s /b is to find folders, and %~ni is to expand to the file name. Where is the file name? There is only the path at all.

Modify the code as:
@echo off
for /F "t ...

Originally, Windows can't distinguish what is a file and what is a path. Let's ask a question: there is a folder a.txt, do you say it is a folder or a file??? Moreover, how can a machine recognize it

I just tested my computer just now and there were no error messages.

I think that %%~ni is expanded to the file name! If it is expanded to a path, an error will occur.

[ Last edited by pengfei on 2006-9-27 at 09:40 ]

Originally posted by pengfei at 2006-9-27 09:32:
Just tested my computer and there were no error messages.

I think %%~ni expands to the file name! If it's a path expansion, an error will occur.

[ Last edited by pengfei on 2006-9-27 at 09:40 ]

cd c:\
md test
cd test
md 123
md 123456
for /F %i in ('dir /ad /s /b') do echo %~ni | findstr "123"

Please execute this and see if there will be an error

Originally posted by he200377 at 2006-9-27 09:28:

Windows originally can't distinguish what is a file and what is a path. Let's ask a question: there is a folder named a.txt, do you say it is a folder or a file??? Moreover, how can a machine recognize it

　　That's not right. The dir command under CMD can distinguish whether a certain file is a folder or a file. Otherwise, why are there the two parameters /ad and /a-d for the dir command? According to your understanding, wouldn't they be useless? Create a folder named a.txt, and try using dir /ad and dir /a-d respectively to see if dir can distinguish them correctly.

　　Just in the extension of the for statement, %~xi simply thinks that the last string ending with a dot is the suffix, thus causing the situation of mistakenly thinking that the suffix of the folder a.txt is .txt. If you think that Windows can't distinguish files and paths correctly based on this, that's completely wrong. But this also proves that there is a bug in the extension of the for statement, and you must be careful when using it.

Yes, it seems I was wrong. It was just theoretical inference without testing.

Try using dir /ad and dir /a-d respectively. A word to clarify~ It turns out that dir can exclude directories. I was trying to figure out a way to exclude directories last time. This time, I'll go back and check *.exe /?

Originally posted by he200377 at 2006-9-27 09:42:

cd c:\
md test
cd test
md 123
md 123456
for /F %i in ('dir /ad /s /b') do echo %~ni | findstr "123"

Please execute this and see if it will go wrong

　　From this code, you are executing in the CMD window. Judging from your overall meaning, you want to first go to the root directory of drive C and then create folders, but the first sentence you wrote is not correct because it cannot jump to the root directory of drive C. Think about why; and your final for statement is incomplete, so even if your previous code is all correct, an error will occur when executing here.

　　The above code I executed in a batch file by replacing %i with %%i, so the above remarks were wrong. I correct it here and apologize for causing misunderstandings to others.

[ Last edited by namejm on 2006-9-27 at 10:16 ]