Shellcode questions

["Discussion Lists" <discussions () lagraphico com>]

Hi all,
I would have guessed that shellcode would look quite a bit different on
different types of CPU's and OS's, but I just made shellcode in Mandrake
9.1 (Kernel 2.4 I think) and didn't expect it to look different than in
RedHat 8, which was what I was using not too long ago.  It did however
look different.  Some stuff looked the same, and it still worked, but
the only things I can think of that might cause that are either a newer
kernel, a newer version of gdb, or a newer compiler (since the CPU
didn't change at all).  Does that sound about right?