printf function by Linus Torvaludus in Kernel 0.01 !

2. static int printf(const char *fmt, ...)
3. {
4.         va_list args;
5.         int i;
7.         va_start(args, fmt);
8.         write(1,printbuf,i=vsprintf(printbuf, fmt, args));
9.         va_end(args);
10.         return i;
11. }

    
    

    
    

    Standard C libraries:

    
    

    http://www.utas.edu.au/infosys/info/documentation/C/CStdLib.html#stdio.h

    
    

    
    

    
    

    
    /*
     *   NOTE!!   For any other task 'pause()' would mean we have to get a
     * signal to awaken, but task0 is the sole exception (see 'schedule()')
     * as task 0 gets activated at every idle moment (when no other tasks
     * can run). For task0 'pause()' just means we go check if some other
     * task can run, and if not we return here.
     */
    
    

    
    

    for(;;) pause();   
    
    
    Task 0 is idle process.
    
    
    
    
    
    
    
    

    The schedule( ) Function

    schedule( ) implements the scheduler. Its objective is to find a process in the runqueue list and then assign the CPU to it. It is invoked, directly or in a lazy way, by several kernel routines.

    
    

    Taken from :   http://oreilly.com/catalog/linuxkernel/chapter/ch10.html

    
    

    
    

    
    

    tty is a Unix command that prints to standard output the name of the file connected to standard input. The name of the program comes from teletypewriter, abbreviated "TTY".

    
    

    Inodes

    
    

      :http://e2fsprogs.sourceforge.net/ext2intro.html