中国DOS联盟

Is there any way to use the for instruction to analyze the byte part in 1.txt after I use dir c:\windows\system32\drivers\etc\hosts >>d:\1.txt.

Example:
I first use dir c:\windows\system32\drivers\etc\hosts >>d:\1.txt to generate a 1.txt. The content of this text is as follows.
-----------
The volume in drive C has no label.
The serial number of the volume is 2C10-E32D

Directory of c:\windows\system32\drivers\etc

2003-03-03 23:23 730 hosts
1 file 730 bytes
0 directories 2,955,378,688 available bytes
---------------------

Now I need to use the for instruction to read the value 730 in 730 bytes and assign the value 730 to a variable. But I use for,/f,"skip=6 tokens=1,2,*",%%a in (d:\1.txt) do @each %%a>d:\2.txt

There seems to be a problem. And there are 2 lines after 730 bytes, how to shield the following 2 lines..
I just want to get the value 730, and then compare whether it is equal to the value I want.. How to do it?

Add a find command to locate the line at byte 730.

Also, if it's just the example above, there's really no need to be this complicated.

You can directly use %~zi to get the file size.
The example above directly displays the size (in bytes) of the hosts file
for %i in (c:\windows\system32\drivers\etc\hosts) do echo %~zi
The above command is executed directly in CMD. When placed in a batch script, you need to change it to %%i

Thank you very much.　　chenall
My purpose is to need the size of the hosts file.

Why use dir?

Directly use

for %a in (c:\windows\system32\drivers\etc\hosts) do echo %~za

Isn't it more convenient? It directly comes out, which is the size...

PS: Note to replace with the content you need