Embedded Linux Overview

Linux kernel five major management functions:

     Document management, process management, device management, memory management, and network management.

     For example: printf write

#include <stdio.h>
#include <unistd.h>

int main()
{
    printf("printf hello linux\n");
    write(1,"write hello linux\n",19);

    return 0;
}

x

10

 

1

#include <stdio.h>

2

#include <unistd.h>

3

4

int main()

5

{

6

    printf("printf hello linux\n");

7

    write(1,"write hello linux\n",19);

8

9

    return 0;

10

}

Printf can be seen by way of example, and indeed the write system call to the terminal of the printed output.

IO classification:

File IO, standard IO, IO directory

Is known from notes (Wiz)