This set of commands is taken from the psql command-line tool. Some interesting flags (to see all, use -h or --help depending on your psql version):-E: will describe the underlaying queries of the \ commands (cool for learning! That way SQL and psql commands can be freely mixed on a line. It provides a visual, user-friendly environment with a host of practical solutions that make managing databases easy. Bash is a “Unix shell”: a command-line interface for interacting with the operating system. Psql is the interactive terminal for working with Postgres. First, you should connect to the newly created “thegeekstuff” database using the psql command as shown below. On Windows it might look like C:\Program Files\PostgreSQL> but Windows prompts are also configurable. pgAdmin is a web interface for managing PostgreSQL databases. psql is the standard PostgreSQL application to work with databases; It uses a superset of standard SQL; It can be interactively like DBaccess, or in scripts like sqlcmd; Common psql Command Line Options-A, –no-align: set output to non-aligned, no padding-c sql, –command sql: execute the sql command and then exit Create an alias in your bash profile that runs your psql command for you. $ psql -U sampleuser -h localhost A line starting with # represents a comment. In front of this prompt… Prompt 1 is the normal prompt that is issued when psql requests a new command. thegeekstuff=# Note: The above command will take you to the postgreSQL prompt “=#”. Use psql to edit, automate, and execute queries in PostgreSQL. Tables are an example for relations. Psql Tweet What is psql. For the syntax of a specific command, use the following command − For example:alias postygresy='psql --host hostname database_name -U username' The values should match those that you inputted to the ~/.pgpass file. Using psql, you can generate a complete list of commands by using the \help command. But in any case, the arguments of a meta-command cannot continue beyond the end of the line. * In this tutorial, we will learn how to answer these key questions from the command line using psql. The $ starting a command line in the examples below represents your operating system prompt. Prompt 2 is issued when more input is expected during command entry, for example because the command was not terminated with a semicolon or a quote was not closed. share | improve this answer | follow | It listed all the available relations. )-l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS); Most \d commands support additional param of __schema__.name__ and accept wildcards like *. $ psql thegeekstuff psql (9.6.1) Type "help" for help. psql. PostgreSQL must be properly installed and working with access to its psql command line interface in order to execute the psql examples explained in this tutorial. A basic working knowledge of database management systems and SQL commands for the psql PostgreSQL interface. Source your bash profile with . This psql command is used to describe available relations in the database. ~/.bashrc or similar. In this tutorial, you will learn how to connect to PostgreSQL from the command line using psql or pgAdmin. Prompts are configurable so it may well not look like this. Type your alias from the command line. Theres an abundance of flags available for use when working with psql, but lets focus on some of the most important ones, then how to connect:-h the host to connect to-U the user to connect with-p the port to connect to (default is 5432) In the following example, we have run \d command on mydb database. In addition to being able to submit raw SQL queries to the server via psql you can also take advantage of the psql meta-commands to obtain information from the server. Now that you have Postgres installed, open the psql as − Program Files → PostgreSQL 9.2 → SQL Shell(psql). It has the ability to run an entire script of commands, known as a “Bash shell script”. I recently started to create UNIX / LINUX Bash Shell script for enhancing my PostgreSQL DBA Work. Meta-Commands. 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