PostgreSQLでの「\copyright」コマンドによる著作権表示の方法

psqlであるデータベースに接続した後、

\copyright

と入力し、[Enter]キーを押すことで、著作権（コピーライト）を表示できる。

《備考》PostgreSQL8.1のヘルプに記載されている情報
\copyright show PostgreSQL usage and distribution terms

《例》Linux（CentOS 5）＋PostgreSQL 8.1で著作権（コピーライト）を表示する方法
[root@nobuneko ~]# psql -U postgres nobuneko_database
Welcome to psql 8.1.23, 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

nobuneko_database=# \copyright
PostgreSQL Data Base Management System

This software is based on Postgres95, formerly known as Postgres, which
contains the following notice:

Permission to use, copy, modify, and distribute this software and its
documentation for any purpose, without fee, and without a written agreement
is hereby granted, provided that the above copyright notice and this paragraph
and the following two paragraphs appear in all copies.

IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST
PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGE.

THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE.THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS,
AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE,
SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.