seb@seb:~/src/postgresql- 7 . 4 . 19 /src/bin/psql$ LD_LIBRARY_PATH=../../interfaces/libpq ./psql -h localhost
Password:
Welcome to psql  7 . 4 . 19 , the PostgreSQL interactive terminal.

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

seb=> select version();
                                        version
----------------------------------------------------------------------------------------
 PostgreSQL  8 . 3 . 1  on i486-pc-linux-gnu, compiled by GCC cc (GCC)  4 . 2 . 3  (Debian  4 . 2 . 3 - 2 )
( 1  row)

seb=> select * from qqq;
 id  |     val
-----+-------------
    1  |
    2  |
    3  |
    4  | Русский
    5  | яЗЫК
    6  | проверка
  111  | for del  111 
  333  | for del  333 
( 8  rows)

seb@seb:~/src$ ls -l postgresql-7.4.19/src/interfaces/libpq | grep libpq.so
lrwxrwxrwx 1 seb seb     12 Апр 29 00:11 libpq.so -> libpq.so.3.1
lrwxrwxrwx 1 seb seb     12 Апр 29 00:11 libpq.so.3 -> libpq.so.3.1
-rwxr-xr-x 1 seb seb 115089 Апр 29 00:11 libpq.so.3.1