Where to find API(?)

Hi, I just started with serial programming and I am following a tutorial.
Where can I find a list of each (gcc) header file with its functions, stuctures and explanation of each function and use of the structures. This is because there is a lot of new *nix specific header file like termios.h etc that is not there in standard C which I have learned.
The tutorial lists all the funtions and constants it uses but I want something like a reference; but not like man pages where I have to know the name of the function/command in the first place, to get its usage.

Also my /dev/ directory lists a very large number of serial device file; not just ttyS0,1,2,3,4 but up to9 and even new ones like ttya1 etc. What does that indicate? I seem to have only a single 9pin connector at the back of the CPU.I am using Ubuntu 8.04.

It is far from a list of "each header file with it's functions", but "man open" or "man termios" will give you information on those functions - sometimes you need to tell man which section you want, if there are several different things called the same thing, e.g "man 2 open" will show you the system function open, even if there is other "open" functionality to look at elsewhere.

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Mats

Ok, that's what i missed. I kept on trying stuff like

Code:

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man open(3)
man open[2]
man open2

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and it kept saying not found.
Thanks!!!!

OOps! i can't get man 3 termios.
It should be there... there is only termio and it says to look at termios(3) but it is not there...

Maybe you haven't installed sufficient documentation packages. You can also google for "man termios" (that's what I just did, as I don't have a linux machine on my work-desk).

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Mats

Thanks again!
Let me see if ihave installed all the docs...