Hi Danny,

>Thanks for the stat function. U referred to section 1 & 2. What book is
>this?

It's not a book, it's the man(ual) pages you get on most Unix system.

To get the documentation for a program or library function, if the people 
who provided those also provided the man pages, you can usually simply type 
from the prompt

man name_of_the_function

The man pages are divided in sections, one for user programs, one for 
system programs, one for C library routines, one for games, etc...
If a keyword is used in more than one section, you can chose which section 
to search specifying te number on the command line, like

man 2 name_of_the_function

Hope this helps,
fwyzard