static int execute(char *my_argv[], struct ast *my_ast, int j)
{
    char *name = my_argv[0];
    if (is_builtin(name))
    {
        fprintf(stderr, "TODO execute a builtin\n");
        return 1;
    }
    int ret;
    pid_t pid;
    if ((pid = fork()) == 0)
    {
        if (my_ast->sons[my_ast->index - 1]->elt.type == REDIRECTION)
        {
            redirection(my_ast->sons[my_ast->index - 1]);
            my_argv[j - 1] = NULL;
        }
        if (name[0] == '.' && name[1] == '/')
        {
            int ex = execvp(name, my_argv);
            if (my_ast->sons[my_ast->index - 1]->elt.type == REDIRECTION)
                reinit(my_ast->sons[my_ast->index - 1]);
            if (ex == -1)
                exit(1);
            exit(0);
        }
        printf("commande executée\n");
        int res = execvp(name, my_argv) == -1;
        printf("commande executée\n");
        if (my_ast->sons[my_ast->index - 1]->elt.type == REDIRECTION)
            reinit(my_ast->sons[my_ast->index - 1]);
        if (res)
        {
            fprintf(stderr, "%s: command not found\n", name);
            exit(127);
        }
        exit(0);
    }
    else
        waitpid(pid, &ret, 0);
    return WEXITSTATUS(ret);
}