How to set autocommit off in postgreSQL ?

 

postgres=# \set AUTOCOMMIT off

postgres=#

postgres=# \echo :AUTOCOMMIT

off

postgres=#

How to check autocommit in PostgreSQL ?

 

postgres=# \echo :AUTOCOMMIT

on

postgres=#

How to check command history in PostgreSQL ?

 

postgres=# \s

\d

\l

\l

\c

\c postgres

select pg_backend_pid();

alter user postgres password 'abcd12345';

\c demo

\c

\l

\c

\l

select * from pg_database;

show data_directory

show data_directory;

show data_directory;

select setting from pg_settings;

select * from pg_settings;

show data_directory;

\q

\conninfo

SELECT *

FROM pg_settings

WHERE name = 'port';

\c

\!

\! ls -lrt

\s

\d

\l

\s

postgres=#

How to execute OS command from psql prompt ?

 

postgres=#

postgres=# \!

bash-4.4$

bash-4.4$

bash-4.4$ ls -la

total 16

drwx------.  3 postgres postgres   79 Jan 15 08:33 .

drwxr-xr-x. 47 root     root     4096 Jan 10 12:04 ..

drwx------.  4 postgres postgres   51 Jan 10 12:05 16

-rw-------.  1 postgres postgres 1405 Jan 15 12:17 .bash_history

-rwx------.  1 postgres postgres  391 Jan 15 08:33 .bash_profile

-rw-------.  1 postgres postgres  352 Jan 15 10:00 .psql_history

bash-4.4$ 

postgres=#

postgres=#

postgres=#

postgres=# \! ls -lrt

total 0

drwx------. 4 postgres postgres 51 Jan 10 12:05 16

postgres=#