How to create split archives?

In general, such a feature can be achieved using the standard tools and the command line.
What is your use-case for this? If archive splitting is a fringe feature, it make not make it
Can you list a few use-cases?

In command line, you can split the big file (it does not matter what type it is) with

split --bytes=10m myarchive.tar.bz2

This will create archives of the form "xa?".
You can join by typing

cat xa? > myarchive.tar.bz2

For uploading a file onto mediafire, rapidshare or a similar service. It's over 100mb unfornutately, so I can't do it as one piece but need to split it.

Windows and mac people will need to be able to see it too, so I don't think splitting it like that will work unfornutately...

There's a tool in WinRAR that allows you to create these split archives, hence why I was asking.

Thank you for your reply.

I see.

Please have a look at
http://bugzilla.gnome.org/browse.cgi?product=file-roller

That is the place to search for existing feature requests, and if not found, you can post a new feature request.
I would appreciate if you could go through this in any way (because I think karchiver will do the job below).

Also, another program to try is KArchiver (use Synaptic Package Manager, search for "karchiver").

Thank you, KArchiver did the trick.

I'll try and figure out how to submit a feature request in there.