[postgres@cntd1952 ~]$ pg_ctl start postmaster starting [postgres@cntd1952 ~]$ LOG: database system was shut down at 2006-12-25 21:44:01 JST （中略） LOG: transaction ID wrap limit is 2147484146, limited by database "postgres" [postgres@cntd1952 ~]$ psql   ← PostgreSQLとの対話式プログラム。Oracleのsqlplusのようなもの Welcome to psql 8.1.5, 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 postgres=# \q   ← psqlの終了は、\q [postgres@cntd1952 ~]$ pg_ctl stop   ← インストールを継続するのでPostgreSQLを終了 waiting for postmaster to shut down.... done postmaster stopped