老是记不住，干脆放在这里记录下来。

server {
    listen       81;
    server_name  localhost;

    location = /favicon.ico {
        log_not_found off;
        log_subrequest off;
    }


    location ^~ /log {
        alias /home/dist;
        autoindex on;
        autoindex_exact_size off;
        autoindex_localtime on;
    }
}

参考：

http://nginxlibrary.com/enable-directory-listing/