neromy.blogg.se - List user postgres

LIST USER POSTGRES INSTALL
LIST USER POSTGRES UPDATE
LIST USER POSTGRES PASSWORD

In this case, the current database is also called postgres, which is the same as the username.

The PostgreSQL's prompt is in the format of databaseName=# for superuser or databaseName=> for regular user.

\g or terminate with semicolon to execute query You are using psql, the command-line interface to PostgreSQL.

LIST USER POSTGRES PASSWORD

Enter the CURRENT SUPERUSER password for sudo. $ sudo -u postgres psql - Run command "psql" as UNIX USER "postgres". To run psql using "UNIX USER" postgres, you need to invoke " sudo -u postgres psql", which switches to "UNIX USER" postgres and run the psql command. Login as PostgreSQL Superuser " postgres" via " psql" Client The UNIX USER postgres cannot login interactively to the system, as its password is not enabled. The PostgreSQL installation creates a "UNIX USER" called postgres, who is ALSO the "Default PostgreSQL's SUPERUSER". Login to the PostgreSQL Server Default PostgreSQL Superuser " postgres" I will describe these tools in later sections. share/postgresql-common/pg_wrapper* Graphical Clientsīesides the command-line client psql, many graphical clients are available to access PostgreSQL, e.g., pgAdmin3, PhpPgAdmin (for PHP, model after PhpMyAdmin), etc. Lrwxrwxrwx 1 root root 37 xxx xx xxxx /usr/bin/createuser ->. Lrwxrwxrwx 1 root root 37 xxx xx xxxx /usr/bin/createdb ->. The directory /usr/lib/postgresql/10/bin also contains many utilities such as createdb (create database), dropdb (drop database), createuser (create PostgreSQL user), dropuser (drop PostgreSQL user), among others, with symlinks defined in /usr/bin. The actual program and utilities are located at /usr/lib/postgresql/10/bin and linked via pg_wrapper. Psql is a symlink located in /usr/bin (a PATH entry). The PostgreSQL installation provides a command-line client program called psql, which can be used to login to the server. c config_file=/etc/postgresql/10/main/nf usr/lib/postgresql/10/bin/postgres -D /var/lib/postgresql/10/main You could display the PostgreSQL server process via: There is also a symlink called postmaster in the same directory. The PostgreSQL server program is called postgres (in directory /usr/lib/postgresql/10/bin). The PostgreSQL server accepts connection by client program over the TCP/IP network. $ sudo systemctl status postgresql // Show th status $ sudo service postgresql reload // Reload the configuration without stopping the service // OR $ sudo service postgresql restart // Stop and restart the service

$ sudo service postgresql start // Start the service $ sudo service postgresql stop // Stop the service The postgresql service is started automatically upon startup. In Ubuntu, the server is run as a service called postgresql (configured in /etc/init.d/postgresql). PostgreSQL runs as a client-server system. Reference: PostgreSQL Documentation - Tutorial.

The port directive specifies the TCP port number.

ident_file directive specifies the ident authentication file.

hba_file directive specifies the host-based authentication file.

data_directory directive specifies where the databases are stored.

#listen_addresses = 'localhost' # what IP address(es) to listen on Ident_file = '/etc/postgresql/10/main/pg_nf' # ident configuration file Hba_file = '/etc/postgresql/10/main/pg_hba.conf' # host-based authentication file $ less /etc/postgresql/10/main/nfĭata_directory = '/var/lib/postgresql/10/main' The main configuration file is called " nf". The PostgreSQL configuration files are stored in directory /etc/postgresql/10/main (for Ubuntu).

postgresql-contrib-10: Additional supplied modules.

postgresql-client-common, postgresql-client-10: Client binaries and libraries.

postgresql, postgresql-common, postgresql-10: Core database server.

The following packages will be installed: Lrwxrwxrwx 1 root root 37 xxx xx xxxx /usr/bin/psql ->.

$ which psql // psql is an interactive PostgreSQL client Postgresql: /etc/postgresql /usr/lib/postgresql /usr/share/postgresql.

LIST USER POSTGRES INSTALL

$ sudo apt-get install postgresql postgresql-contrib // Verify the installation

LIST USER POSTGRES UPDATE

$ sudo apt-get update // Install PostgreSQL Installing PostgreSQL 10.6 Ubuntu // Refresh the apt-get repository The mother site for PostgreSQL is with manual. The project started in UC Berkeley in 1986, and is now developed by a group of volunteers called "PostgreSQL Global Development Group". It supports a large part of the SQL standards such as foreign keys, triggers, views and transactions and object-oriented features such as inheritance. PostgreSQL is an open-source Object-Relational Database Management System (ORDBMS).

I assume that you are familiar with SQL commands (such as CREATE TABLE, DROP TABLE, INSERT, SELECT, UPDATE and DELETE).