#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#define MAX_LINE_LEN 512

int main (int argc, char **argv)
{
    FILE *fp;         // file pointer
    char fm[] = "r";  //open file mode - read only
    char text_line[MAX_LINE_LEN];
    char java[32];
    char readfile[64];
    char hyperlink[512];
    char new_line[512];

    if ((fp = fopen(argv[1], fm)) == NULL) {
        printf ("Opening file %s FAILED.\n", argv[1]);
        exit(0);
    }

    fgets(text_line, MAX_LINE_LEN, fp);
    sscanf (text_line, "%s %s %s", java, readfile, hyperlink);
    fclose (fp);

    sprintf (new_line, "java netarchiver %s", hyperlink);

    char cmd[256];
    if ((fp = fopen("tmp.txt", "wa")) == NULL) {
        printf("Opening tmp.txt FAILED.\n");
        exit (0);
    }

    fputs (new_line, fp);
    fclose (fp);
    sprintf (cmd, "mv tmp.txt %s", argv[1]);
    system (cmd);

    return 1;
}