Install PostgreSQL on Linux Last Updated : 24 Sep, 2021 Summarize Comments Improve Suggest changes Share Like Article Like Report This is a step-by-step guide to install PostgreSQL on a Linux machine. By default, PostgreSQL is available in all Ubuntu versions as PostgreSql "Snapshot". However other versions of the same can be downloaded through the PostgreSQL apt repository. We will be installing PostgreSQL version 11.3 on Ubuntu in this article. There are three crucial steps for the installation of PostgreSQL as follows: Check for the current version of PostgreSQL on your Ubuntu Install PostgreSQL Verify the installation Check for the current version of PostgreSQL You can check for the current version of PostgreSQL on your Ubuntu device by using the below command in the terminal: postgres -V Installing PostgreSQL on Ubuntu After checking if you need an update of PostgreSQL, follow the below steps to install the latest PostgreSQL version: Step 1: Add the GPG key for connecting with the official PostgreSQL repository using the below command: wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -Step 2: Add the official PostgreSQL repository in your source list and also add it's certificate using the below command: sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ `lsb_release -cs`-pgdg main" >> /etc/apt/sources.list.d/pgdg.list'Step 3: Run the below command to install PostgreSQL: sudo apt update sudo apt install postgresql postgresql-contrib Verifying the Installation of PostgreSQL There are couple of ways to verify the installation of PostgreSQL like connecting to the database server using some client applications like pgAdmin or psql. The quickest way though is to use the psql shell. For that follow the below steps: Step 1: Open the terminal and run the below command to log into PostgreSQL server: sudo su postgresStep 2: Now use the below command to enter the PostgreSQL shell: psqlStep 3: Now run the below command to check for the PostgreSQL version: SELECT version(); Comment More infoAdvertise with us R RajuKumar19 Follow Improve Article Tags : PostgreSQL postgreSQL-basics Similar Reads PostgreSQL Tutorial In this PostgreSQL tutorial youâll learn the basic data types(Boolean, char, text, time, int etc.), Querying and Filtering techniques like select, where, in, order by, etc. managing and modifying the tables in PostgreSQL. Weâll cover all the basic to advance concepts of PostgreSQL in this tutorial. 8 min read PostgreSQL DATEDIFF Function PostgreSQL doesnât have a DATEDIFF function like some other databases, but you can still calculate the difference between dates using simple subtraction. 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