void parse(FILE *stream, llist list)
{
    char *ret, buff[MAX_BUFF_SIZE];

    while ((ret = fgets(buff, MAX_BUFF_SIZE, stream))) {
        if (ferror(stream) || !ret) {
            fprintf(stderr, strerror(errno));
        }

        char *s = buff;

        /*
         * username:password:UID:GID:GECOS:directory:shell
         * 1-32    :        :>1 : >1
         */

        for (int i = 0; i < 7; i++) {
            char *sep = strchr(s, ':');
            sep = sep;
            *sep = '\0';
            char name[32];
            strcpy(name, s);
            printf("%s", name);
        }

    }

    list = list;
}