Merging multiple files

[majidkamali1370]

Hi.
How to merge multiple files into one. something like zipping but with no compression.

Thanks

[Script Coder]

You would have to create/use a file structure. Like, for example, FAT uses tables to indicate the location of files.

[kbw]

If you want an archive that you can extract the content on, you can use a standard zip program and switch off the compression, or use ar.

If you just want to concatenate all the files into a single file:
1. With a Unix shell:

cat file1 file2 ... filen > targetfile

2. With DOS/Windows cmd shell:

copy /b file1+file2+ ... +filen targetfile

[majidkamali1370]

@Script Coder:
I don't want to create a file system. Just a file that contains filenames and sizes and files content.

@kbw:
I want to write this program by myself. I don't want to use system commands or another program.

[R0mai]

What part of your program do you have trouble with then?

[majidkamali1370]

@R0mai:
In reading file contents. How to separate file contents?

[ne555]

put a header.

[majidkamali1370]

@ne555:
I didn't understand what you said, would you please explain?

[kbw]

You need to design the structure of your archive so you have a header that describes the content the rest of the file.

It's sort of line the Table Of Contents in a book. You open the book, look up the page number of the chapter you're interested in, search for that page and start reading. It's the same with an archive.

[mik2718]

The tar program basically concatentates the files while keeping a record of the directory structure - use that maybe?

[kbw]

It's probably a programming assignment, and so can't use an existing solution.