char *copier(int tube){
    int tmp;
    int TMAX=1024;
    unsigned char buffer[TBUFFER];
    char *dest;
    if((dest = malloc(TMAX))== NULL){
        raler("malloc");
    }
    char *newAlloc=NULL;
    int tCurrent;
    while((tmp= read(tube, buffer, TBUFFER))>0){
        tCurrent=(tmp + strlen(dest));
        if(TMAX < tCurrent){
            TMAX *= 2;
            newAlloc=realloc(dest,TMAX);
            if (newAlloc != NULL){
                dest = newAlloc;
            } else {
                raler("realloc");
            }
            snprintf(dest,TMAX,"%s",buffer);
        }
    }
    if((tmp = read(tube, buffer,TBUFFER))==-1){
        raler("read");
    }
    free(newAlloc);
    return dest;
}