1 /**

     2  *     $Id: file_demo.c,v 1.1.1.1 2008-04-28 17:32:53 mbroeker Exp $

     3  * $Source: /development/c/demos/file_demo.c,v $

     4  *

     5  */

     6 

     7 #include <stdio.h>

     8 #include <stdlib.h>

     9 #include <unistd.h>

    10 #include <sys/types.h>

    11 #include <string.h>

    12 #include <fcntl.h>

    13 

    14 int main (int argc, char **argv)

    15 {

    16     int fd1;

    17     int fd2;

    18     int mode;

    19     char *str = "Schreib mal was!";

    20 

    21     if (argc != 2)

    22         return -1;

    23     mode = strtoul (argv[1], NULL, 8);

    24 

    25     system ("/bin/rm -f /home/mbroeker/Desktop/test1.txt");

    26     system ("/bin/rm -f /home/mbroeker/Desktop/test2.txt");

    27 

    28     /*

    29      * Opens ReadOnly

    30      */

    31     fd1 = open ("/home/mbroeker/Desktop/test1.txt", O_CREAT, mode);

    32     fd2 = open ("/home/mbroeker/Desktop/test2.txt", O_RDWR | O_CREAT, mode);

    33 

    34     if (fd1)

    35         if (write (fd1, str, strlen (str)) == -1)

    36             perror ("FD1");

    37 

    38     if (fd2)

    39         if (write (fd2, str, strlen (str) + 1) == -1)

    40             perror ("FD2");

    41 

    42     close (fd1);

    43     close (fd2);

    44     return 0;

    45 }