Split binary files

Hi,

I have a unzip utility. I have a zip file.
I need to combine them and make a selfextracting file..

I have used the command

copy /b unzip.exe + test.zip test.zip.exe

The files are copied and made as tezt.zip.exe, which is a valid exe.

Now I have to split them back as unzip.exe and test.zip.
How do I do that ?.

[Note:
I wont know the size of unzip.exe as it will be not be present when i give this test.zip.exe to other person.
]

Any help is appreciated.

Thanks,
Pradeep

I'm missing something here.

Most of the compression software lets you create a self-extracting zip, even zlib can do this, as I remember. Why don't you let the software do it so the checksums aren't screwed up?

Hi,

Well I have done it... now..

this is my file

((unzip utility)(zip file)).exe

now my unzip code extracts the zip file to a tmp file and then uses a system command to run it self with the zip file.

its working fine now..

Thanks,
Pradeep