ren commands to be aware of when using wildcard characters _dos/bat

1,
ren full file name * Specifies any character or consecutive string in the full file name. extension name
Change file name: From the beginning of the original file name to the specified character (string). Extension name
Such as:
ren 10.pdf *0.c to 10.c
ren 10.pdf *p.c 10.p.c.
ren 10.pdf *d.c 10.pd.c.

2,
ren full filename * Specifies a string that is not contiguous with the full file name. extension
The file name is: From the beginning of the original file name to the specified string first and the remaining string contents. Extension Name
Such as:
ren 10.pdf *1p.c 1p.c.
ren 10.pdf *0dp.c 10dp.c.

3,
ren full file name * Specifies any character (string) in addition to the full file name. extension name
Change file name: Wildcard full file name + Specify character Ningfu (string). Extension name
Such as
ren 10.pdf *mm.c 10.pdfmm.c.




Originally Posted by bjsh at 2007-4-13 10:10 PM:
Create a new 10.pdf on C disk
Execute the following two sentences;
See what the last 10.pdf was renamed

ren 10.pdf *2.c
The result is: 10.pdf2.c

ren 10.pdf *1.c
Result is 1.c


ren 10.pdf *2.c

* What's the first word behind?
2
Is there any word in 10.pdf?
No, it's not. So, on the back side,
10.pdf
2.c

10.pdf2.c

ren 10.pdf *1.c

* What's the first word behind?
1

Is there any word in 10.pdf?
Yes. Look forward from behind, find the first, align

10.pdf 1 To remove
1.c 1 to connect.
1.c



ren 10010.pdf *1.c

* What's the first word behind?
1

Is there any word in 10010.pdf?
Yes. Look forward from behind, find the first, align


10010.pdf 1 To remove
1.c 1 to connect.
1001.c



Special Ren * *.
ren * "*"


FAT32

C:\test>cd.>123...456...789.mp3

C:\test>dir/b
123...456...789.mp3

C:\test>ren * *.

C:\test>dir/b
123...456...789

C:\test>ren * *.

C:\test>dir/b
123

---
C:\test>cd.> "123 456 789.mp3"

C:\test>dir/b
123 456 789.mp3

C:\test>ren * "*"

C:\test>dir/b
123

C:\test>for%a in (*) do @echo "%a"
"123"


Ntfs

D:\test>cd.>123...456...789.mp3

D:\test>dir/b
123...456...789.mp3

D:\test>ren * *.

D:\test>dir/b
123...456...789

D:\test>ren * *.

D:\test>dir/b
123...456

D:\test>ren * *.

D:\test>dir/b
123

---
D:\test>cd.> "123 456 789.mp3"

D:\test>dir/b
123 456 789.mp3

D:\test>ren * "*"

D:\test>dir/b
123 456

D:\test>for%a in (*) do @echo "%a"
"123 456"

D:\test>ren * "*"

D:\test>dir/b
123

D:\test>for%a in (*) do @echo "%a"
"123"