linux assembly

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I would like to learn x86 assembly on 32-bit linux with the NASM assembler. Where do you start off on linux other then a basic hello world program? Also, where can you find a good list of system call numbers for linux, if I'm not mistaken?

(note: I have some knowledge from art assembly text. I don't have much experience.)

System call numbers with registers used (2.2.x kernel): http://docs.cs.up.ac.za/programming/asm/derick_tut/syscalls.html

and http://syscalls.kernelgrok.com/ for 2.6.x kernels.

These will probably work for some simple code while you hone your assembly skills.

Using just sys_read, sys_write, and sys_exit you can write a whole lot of command line filters if you feel so inclined. Perhaps even a simple compiler that turns a higher level language into NASM code.

Then again, you might need to learn sys_brk in order to implement your own version of malloc (or copy the ideas behind talloc for a better memory manager).