pg_restore parameter( -n) not work

Hello, I run pg_restore on linux. I meet a problem. It is ...

pg_restore 8.1.0 parameter( -n) not work。

TEST CASE:

[postgres@db2 ~]$ createdb db5
CREATE DATABASE
[postgres@db2 ~]$ psql db5
Welcome to psql 8.1.0, the PostgreSQL interactive terminal.

Type: \copyright for distribution terms
\h for help with SQL commands
\? for help with psql commands
\g or terminate with semicolon to execute query
\q to quit

db5=# create table t1(i int,j int);
CREATE TABLE
db5=# create schema work;
CREATE SCHEMA
db5=# create table work.t1(i int,j int);
CREATE TABLE
db5-# \q
[postgres@db2 ~]$ pg_dump -d db5 -Fc > a.out

Oonly a little information is displayed.
[postgres@db2 ~]$ pg_restore -n work a.out
--
-- PostgreSQL database dump
--

SET client_encoding = 'EUC_CN';
SET check_function_bodies = false;
SET client_min_messages = warning;

--
-- PostgreSQL database dump complete
--

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