file_demo.c
author Markus Bröker <mbroeker@largo.dyndns.tv>
Sat, 13 Dec 2008 17:57:54 +0100
changeset 3 820ed7fb9314
parent 0 af501b0c1716
child 8 96d16dfe787a
permissions -rw-r--r--
database, gauss, lotto, mem2swap, prog_limit moved to demos committer: Markus Bröker <mbroeker@largo.homelinux.org>

/**
 *     $Id: file_demo.c,v 1.1.1.1 2008-04-28 17:32:53 mbroeker Exp $
 * $Source: /development/c/demos/file_demo.c,v $
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <string.h>
#include <fcntl.h>

int main (int argc, char **argv)
{
    int fd1;
    int fd2;
    int mode;
    char *str = "Schreib mal was!";

    if (argc != 2)
        return -1;
    mode = strtoul (argv[1], NULL, 8);

    system ("/bin/rm -f /home/mbroeker/Desktop/test1.txt");
    system ("/bin/rm -f /home/mbroeker/Desktop/test2.txt");

    /*
     * Opens ReadOnly
     */
    fd1 = open ("/home/mbroeker/Desktop/test1.txt", O_CREAT, mode);
    fd2 = open ("/home/mbroeker/Desktop/test2.txt", O_RDWR | O_CREAT, mode);

    if (fd1)
        if (write (fd1, str, strlen (str)) == -1)
            perror ("FD1");

    if (fd2)
        if (write (fd2, str, strlen (str) + 1) == -1)
            perror ("FD2");

    close (fd1);
    close (fd2);
    return 0;
}