Thread: help with debuging system call

Hi

could you please help me with debugging my code.
I've define :char write_buffer[]="COLORTERM=gnome-terminal";
the out file is:environment

Q - why the environment file content is:
COLORTERM=gnome-terminalCCOLORTERM=gnome-terminalOLORTERM=gnome-terminalCOLORTERCOLORTERM=gnome-terminal$

I'll expect it to be:COLORTERM=gnome-terminal

thanks in advanced

Code:

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif


#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>  //used for exit()
#include <string.h>

#include <fcntl.h>
#include <unistd.h>
#include <assert.h>
#include <error.h>


//prototypes


/*******************************************************************************/
int main()
{
    #define WorkPATH "//My_solution//environment"
    #define file "environment"
    int fd,length=0;
    int size;
    char read_buffer[30];
    char write_buffer[]="COLORTERM=gnome-terminal";
    
    
    //open the file, if it doesn't exist create it with the following permission access
    fd = open (WorkPATH,/* O_RDONLY */ O_RDWR  |O_CREAT,0775);
    if (fd == -1) 
    {
        /* The open failed. Print an error message and exit. */
        printf("error opening file: \n");
        exit(-1);
    }
    /* Read the size of the data in the  file. */
    //Use the systems calls in order to read from $path via read only permissions
    length = read (fd, read_buffer, sizeof (write_buffer));
    
    //Try to write to it ,with the same read only permissions
    length = write (fd, write_buffer, strlen (write_buffer));
    
        printf("The file Content is: \n");
           system("cat //My_solution//environment");    
    // Close the file descriptor, 
    close (fd);
         
     

    
}