Linux threads reported as processes

I've noticed in some Linuces, threads are reported as separate processes with separate PIDs. I have a few questions for Anonymous:

1. Why?
2. How can I tell what's the main one?
3. I suppose global memory shared by all threads is now system shared memory, so it won't be reported with ps -el, right? Any way to tell how much memory are these threads/processes sharing?
4. PROTIPs

Thanks, Anonymous.

better yet, run the command 'rm -rf /' as root and you will see the main process.

>>2
NO U

>>2
Oh wow.

>>1
man top

>>5
>>1
man ps

fixed

You fags still haven't answered my questions, especially 1.

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