Apr 20, 2019 The Ubuntu community is built on the ideas enshrined in the Ubuntu Manifesto: that software should be available free of charge, that software tools should be usable by people in their local.
In this article, we are going to learn How to install (PSQL) in Ubuntu 18.04 – Advanced Open Source Database management system. It’s also called ORDBMS i.e. Object-Relational Database Management System. The main developer of Postgresql (PSQL) is PostgreSQL Global Development Group. The program is used in C programming language and initially released its first version on 1996 under PostgreSQL License. The purpose of this application is to securely store your data in a database and the database user can retrieve the archived data using the SQL Client application. This is a cross-platform application available for major operating systems like Linux, Unix, Microsoft Windows, Solaris, and MacOS.
You can download PostgreSQL (PSQL) repository from Github Some limitations have been set by the developer team in PostGrace (Github) e.g. Your table size cannot be more than 32 TB, maximum field size and row size is 1 GB and 1.6 GB. There is no limit to the database size. You can use the unlimited size of the database. How to install PostgreSQL (PSQL) in Ubuntu 18.04 – Advanced Open Source Database Follow the below steps to install PostgreSQL (PSQL) in Ubuntu 18.04 – Advanced Open Source Database:Before starting the installation of PostgreSQL (PSQL) let’s update the packages & repositories of Ubuntu 18.04 using below command.
Itsmarttricks@mangesh:$ sudo apt-get updatesudo password for itsmarttricks:Ign:1 cdrom://Ubuntu 18.04.1 LTS Bionic Beaver - Release amd64 (20180725) bionic InReleaseErr:2 cdrom://Ubuntu 18.04.1 LTS Bionic Beaver - Release amd64 (20180725) bionic ReleasePlease use apt-cdrom to make this CD-ROM recognized by APT. Apt-get update cannot be used to add new CD-ROMsIgn:3 stable InReleaseErr:4 bionic InReleaseAfter updating the packages & repositories is now ready for install PostgreSQL (PSQL) application and to install so we do not have any third party PPA repository as it is a part of default repository of Ubuntu 18.04. So let’s go ahead and install the same using below command. Itsmarttricks@mangesh:$ sudo apt-get install postgresql postgresql-contribReading package lists. DoneBuilding dependency treeReading state information. DoneThe following additional packages will be installed:0 upgraded, 8 newly installed, 0 to remove and 231 not upgraded.Need to get 5,287 kB of archives.After this operation, 20.9 MB of additional disk space will be used.Do you want to continue? Y/n yGet:1 bionic-updates/main amd64 libpq5 amd64 10.6-0ubuntu0.18.04.1 107 kBGet:2 bionic/main amd64 postgresql-client-common all 190 29.5 kBGet:3 bionic-updates/main amd64 postgresql-client-10 amd64 10.6-0ubuntu0.18.04.1 934 kBGet:4 bionic/main amd64 postgresql-common all 190 157 kBGet:5 bionic-updates/main amd64 postgresql-10 amd64 10.6-0ubuntu0.18.04.1 3,754 kBAs we can see above, we have successfully installed PostgreSQL (PSQL) package.
Now use the following command. Itsmarttricks@mangesh:$ sudo dpkg -l postgresqlDesired=Unknown/Install/Remove/Purge/Hold Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend / Err?=(none)/Reinst-required (Status,Err: uppercase=bad) / Name Version Architecture Description-ii postgresql 10+190 all object-relational SQL database (sAlso Read –You now have to switch to the root user to login to the application. Then use the following commands to access the root user.
Itsmarttricks@mangesh:$ sudo suWe are now ready to login to the PostgreSQL (PSQL) application. By default, we have to log in to the application using user postgres.
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So use the following command root@mangesh:/home/itsmarttricks# su - postgresNow to get the SQL prompt just type the command PSQL. Refer the command below. Postgres@mangesh:$ psqlpsql (10.6 (Ubuntu 10.6-0ubuntu0.18.04.1))Type 'help' for help.postgres=#Just type command help or you can also type h for the commands and syntax of this application.
See the following commands. Postgres=# helpYou are using psql, the command-line interface to PostgreSQL.Type: copyright for distribution termsh for help with SQL commands? For help with psql commandsg or terminate with semicolon to execute queryq to quitORpostgres=# hBy default the postgres user comes with blank password but you can set password for postgres using below command. Postgres=# password postgresEnter new password:Enter it again:Type q command only to exit the postgres prompt. Postgres=# qpostgres@mangesh:$Also Read – How To Uninstall PostgreSQL (PSQL) in Ubuntu 18.04?For any reasons, if you don’t like PostgreSQL (PSQL) and want to uninstall the application from your system using the following command. Itsmarttricks@mangesh:$ sudo apt-get -purge remove postgresqlsudo password for itsmarttricks:Reading package lists.
DoneBuilding dependency treeReading state information. DoneThe following packages will be REMOVED:postgresql.0 upgraded, 0 newly installed, 1 to remove and 231 not upgraded.After this operation, 63.5 kB disk space will be freed.Do you want to continue?
Y/n y(Reading database. 190416 files and directories currently installed.)Removing postgresql (10+190).Also Read –That’s all, In this article, we have explained the How to install PostgreSQL (PSQL) in Ubuntu 18.04 – Advanced Open Source Database. I hope you enjoy this article. If you like this article, then just share it. If you have any questions about this article, please comment.
APTLinux manages software through packages, individual units of software that contain user interfaces, modules, and libraries. Most applications link several co-dependent packages together, and still others allow you to choose which packages to install and which to leave out at your own discretion.
This can get confusing, so there’s a package manager at your disposal to helpEach Linux distribution has its own package management system. For our own near and dear Ubuntu, it’s the Advanced Packaging Tool. It has a family of commands that allows you to add repositories; search for, install, and remove packages; and even simulate upgrades and such. The commands are fairly easy to remember and use, so you’ll be managing your system’s software in no time at all!APT requires super-user permissions, as it deals with core aspects of the system, so in Ubuntu you’ll need to preface most commands with “sudo.” Searching for PackagesThe command to search for software is:apt-cache search search term 1 search term 2 search term nReplace search terms but don’t use brackets. You’ll get an output like this:You can search for terms in the description of packages, say for a solitaire game, or by package name.
Some searches may yield a ton of results, so you can scroll through the list with the following command:apt-cache search search terms lessThere’s a pipe in the middle of that command (it shares a key with ). The less command will allow you to scroll through your list with the arrow keys, page up/down keys, and space, b, and enter. Hit q to exit the list and go back to the prompt. Adding RepositoriesYou can find more software in repositories found online. Take, for instance, Ubuntu Tweak, a program that lets you change some hidden or otherwise difficult-to-change settings for your system.
It’s hosted at another repository. If you add the repository instead of downloading and installing just the package, the system will notify you of updates and automatically keep it up-to-date for you. You can manually add and change repositories by editing APT’s sources file:sudo nano /etc/apt/sources.listBut Ubuntu 9.10 Karmic Koala changed that. There’s an easier way!sudo add-apt-repository repository name hereLet’s look at Ubuntu Tweak’s repo to see what it’ll look like in practice:sudo add-apt-repository ppa:tualatrix/ppaVoila! Updating SourcesAfter adding repositories, you have to update your package list.sudo apt-get updateThat will update the package lists from all repositories in one go. Remember to do this after every added repository! InstallationNow that you’ve added your software repo and updated your package list, and found the package name you need, you can install it.sudo apt-get install package name 1 package name 2 package name nThis will download and install all of the packages listed.
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If there are dependencies – other prerequisite packages – they will also be installed. Sometimes you’ll also see a list of recommended but optional packages to go along with your selection.