Count Filenames Containing a User-Specified Extension

[foxidrive]

That's the reason - the shortname generation doesn't follow the rules on XP and earlier (and apparantly Win 7 and 8 32 bit).

I don't have a 64 bit box to test on...

[Salmon Trout]

I'm surprised; I'd have thought it was a filesystem thing, rather than an OS bitness issue, but your 32 bit W7 & W8 results suggest not.

[Salmon Trout]

On W7 64 I tried creating the files on a FAT formatted SD card that happened to be in my card reader; same behaviour (*.txt finds only fileN.txt)

[foxidrive]

I posted a request in alt.msdos.batch.nt with this batch file, to gauge if it is universal.  I'll post results later.

Code: [Select]

@echo off
>file1.txt echo abc
>file2.txt echo abc
>file3.txtx echo abc
>file4.txtx echo abc

dir /x *.txt*

for %%a in (*.txt) do echo %%a

pause
This is my Win 8 32 bit machine - same as earlier.


Directory of d:\ABC

20/12/2012  08:08 AM                 5              file1.txt
20/12/2012  08:08 AM                 5              file2.txt
20/12/2012  08:08 AM                 5 FILE3~1.TXT  file3.txtx
20/12/2012  08:08 AM                 5 FILE4~1.TXT  file4.txtx

file1.txt
file2.txt
file3.txtx
file4.txtx
Press any key to continue . . .

[Salmon Trout]

foxidrive, do you sleep during the day?

[foxidrive]

foxidrive, do you sleep during the day?

Drat!  My Vampire secret is out!
(I have insomnia and sleep when I can.)

Two replies are in so far - XP 64 bit and Win7 Pro 64 bit - and both show 'standard' 32 bit behaviour.

[BC_Programmer]

On my Windows 7 x64 as well as Windows 8 x64 systems, Ultimate and Professional respectively (doubt that matters but it might), *.txt matches a .txtx file, and dir /x shows the short filename as having a .txt extension.

[Salmon Trout]

So my x64 system is the odd one?

[foxidrive]

Another Win7HP 64 bit machine also shows the 'usual' behaviour.

It would seem just that the behaviour can't be predicted for short filename generation.

[Salmon Trout]

Dunno if this sheds any light...

D:\test-delete>for /l %A in (1,1,3) do @echo hello world > file%A.lex

D:\test-delete>for /l %A in (1,1,3) do @echo hello world > file%A.lexi

D:\test-delete>for /l %A in (1,1,3) do @echo hello world > file%A.lexicon

D:\test-delete>dir
 Volume in drive D is SAT-D
 Volume Serial Number is E8B2-C5D7

 Directory of D:\test-delete

20/12/2012  18:12    <DIR>          .
20/12/2012  18:12    <DIR>          ..
20/12/2012  18:12                14 file1.lex
20/12/2012  18:12                14 file1.lexi
20/12/2012  18:12                14 file1.lexicon
20/12/2012  18:12                14 file2.lex
20/12/2012  18:12                14 file2.lexi
20/12/2012  18:12                14 file2.lexicon
20/12/2012  18:12                14 file3.lex
20/12/2012  18:12                14 file3.lexi
20/12/2012  18:12                14 file3.lexicon
19/12/2012  20:01                43 test.bat
              10 File(s)            169 bytes
               2 Dir(s)  275,366,141,952 bytes free

D:\test-delete>dir /x
 Volume in drive D is SAT-D
 Volume Serial Number is E8B2-C5D7

 Directory of D:\test-delete

20/12/2012  18:12    <DIR>                       .
20/12/2012  18:12    <DIR>                       ..
20/12/2012  18:12                14              file1.lex
20/12/2012  18:12                14 FILE1~1.LE~  file1.lexi
20/12/2012  18:12                14 FILE1~2.LE~  file1.lexicon
20/12/2012  18:12                14              file2.lex
20/12/2012  18:12                14 FILE2~1.LE~  file2.lexi
20/12/2012  18:12                14 FILE2~2.LE~  file2.lexicon
20/12/2012  18:12                14              file3.lex
20/12/2012  18:12                14 FILE3~1.LE~  file3.lexi
20/12/2012  18:12                14 FILE3~2.LE~  file3.lexicon
19/12/2012  20:01                43              test.bat
              10 File(s)            169 bytes
               2 Dir(s)  275,366,141,952 bytes free

D:\test-delete>dir *.lex
 Volume in drive D is SAT-D
 Volume Serial Number is E8B2-C5D7

 Directory of D:\test-delete

20/12/2012  18:12                14 file1.lex
20/12/2012  18:12                14 file2.lex
20/12/2012  18:12                14 file3.lex
               3 File(s)             42 bytes
               0 Dir(s)  275,366,141,952 bytes free

D:\test-delete>dir *.lexi
 Volume in drive D is SAT-D
 Volume Serial Number is E8B2-C5D7

 Directory of D:\test-delete

20/12/2012  18:12                14 file1.lexi
20/12/2012  18:12                14 file2.lexi
20/12/2012  18:12                14 file3.lexi
               3 File(s)             42 bytes
               0 Dir(s)  275,366,141,952 bytes free

D:\test-delete>dir *.lex*
 Volume in drive D is SAT-D
 Volume Serial Number is E8B2-C5D7

 Directory of D:\test-delete

20/12/2012  18:12                14 file1.lex
20/12/2012  18:12                14 file1.lexi
20/12/2012  18:12                14 file1.lexicon
20/12/2012  18:12                14 file2.lex
20/12/2012  18:12                14 file2.lexi
20/12/2012  18:12                14 file2.lexicon
20/12/2012  18:12                14 file3.lex
20/12/2012  18:12                14 file3.lexi
20/12/2012  18:12                14 file3.lexicon
               9 File(s)            126 bytes
               0 Dir(s)  275,366,141,952 bytes free

D:\test-delete>

[foxidrive]

The short name generation is different - but short names can even be random hex numbers in some cases, so it's not an issue.

[Salmon Trout]

short names can even be random hex numbers

I noticed that when I went to 1000 of each extension.