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Explore all Server open source software, libraries, packages, source code, cloud functions and APIs.

Popular New Releases in Server

electron v19.0.0-alpha.4

2022-04-19, Version 18.0.0 (Current), @BethGriggs

v1.20.6

v14.0.0-next.14

TypeScript 4.7 Beta

electron

electron v19.0.0-alpha.4

node

2022-04-19, Version 18.0.0 (Current), @BethGriggs

deno

v1.20.6

angular

v14.0.0-next.14

TypeScript

TypeScript 4.7 Beta

Popular Libraries in Server

JavaGuide

by Snailclimb java

star image 110287 Apache-2.0

「Java学习+面试指南」一份涵盖大部分 Java 程序员所需要掌握的核心知识。准备 Java 面试,首选 JavaGuide!

electron

by electron c++

star image 101364 MIT

:electron: Build cross-platform desktop apps with JavaScript, HTML, and CSS

30-seconds-of-code

by 30-seconds javascript

star image 92600 CC-BY-4.0

Short JavaScript code snippets for all your development needs

node

by nodejs javascript

star image 86998 NOASSERTION

Node.js JavaScript runtime :sparkles::turtle::rocket::sparkles:

deno

by denoland rust

star image 81698 MIT

A modern runtime for JavaScript and TypeScript.

angular

by angular typescript

star image 80840 MIT

The modern web developer’s platform

TypeScript

by microsoft typescript

star image 79882 Apache-2.0

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

nodebestpractices

by goldbergyoni javascript

star image 76719 CC-BY-SA-4.0

:white_check_mark: The Node.js best practices list (March 2022)

laravel

by laravel php

star image 69346

Laravel is a web application framework with expressive, elegant syntax. We’ve already laid the foundation for your next big idea — freeing you to create without sweating the small things.

JavaGuide

by Snailclimb java

star image 110287 Apache-2.0

「Java学习+面试指南」一份涵盖大部分 Java 程序员所需要掌握的核心知识。准备 Java 面试,首选 JavaGuide!

electron

by electron c++

star image 101364 MIT

:electron: Build cross-platform desktop apps with JavaScript, HTML, and CSS

30-seconds-of-code

by 30-seconds javascript

star image 92600 CC-BY-4.0

Short JavaScript code snippets for all your development needs

node

by nodejs javascript

star image 86998 NOASSERTION

Node.js JavaScript runtime :sparkles::turtle::rocket::sparkles:

deno

by denoland rust

star image 81698 MIT

A modern runtime for JavaScript and TypeScript.

angular

by angular typescript

star image 80840 MIT

The modern web developer’s platform

TypeScript

by microsoft typescript

star image 79882 Apache-2.0

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

nodebestpractices

by goldbergyoni javascript

star image 76719 CC-BY-SA-4.0

:white_check_mark: The Node.js best practices list (March 2022)

laravel

by laravel php

star image 69346

Laravel is a web application framework with expressive, elegant syntax. We’ve already laid the foundation for your next big idea — freeing you to create without sweating the small things.

Trending New libraries in Server

zx

by google javascript

star image 30481 Apache-2.0

A tool for writing better scripts

fiber

by gofiber go

star image 19407 MIT

⚡️ Express inspired web framework written in Go

dogehouse

by benawad typescript

star image 9175 MIT

Taking voice conversations to the moon 🚀

htmx

by bigskysoftware javascript

star image 5943 BSD-2-Clause

</> htmx - high power tools for HTML

go-admin

by go-admin-team go

star image 5884 MIT

基于Gin + Vue + Element UI的前后端分离权限管理系统脚手架(包含了:多租户的支持,基础用户管理功能,jwt鉴权,代码生成器,RBAC资源控制,表单构建,定时任务等)3分钟构建自己的中后台项目;文档:https://doc.go-admin.dev Demo: https://www.go-admin.dev Antd beta版本:https://preview.go-admin.dev

Bili.Uwp

by Richasy csharp

star image 4927 MIT

适用于新系统UI的哔哩

SteamTools

by SteamTools-Team csharp

star image 4384 GPL-3.0

🛠「Steam++」是一个包含多种Steam工具功能的工具箱。

1loc

by phuoc-ng typescript

star image 4176 MIT

What's your favorite JavaScript single LOC (line of code)?

aleph.js

by alephjs typescript

star image 3932 MIT

The Full-stack Framework in Deno.

zx

by google javascript

star image 30481 Apache-2.0

A tool for writing better scripts

fiber

by gofiber go

star image 19407 MIT

⚡️ Express inspired web framework written in Go

dogehouse

by benawad typescript

star image 9175 MIT

Taking voice conversations to the moon 🚀

htmx

by bigskysoftware javascript

star image 5943 BSD-2-Clause

</> htmx - high power tools for HTML

go-admin

by go-admin-team go

star image 5884 MIT

基于Gin + Vue + Element UI的前后端分离权限管理系统脚手架(包含了:多租户的支持,基础用户管理功能,jwt鉴权,代码生成器,RBAC资源控制,表单构建,定时任务等)3分钟构建自己的中后台项目;文档:https://doc.go-admin.dev Demo: https://www.go-admin.dev Antd beta版本:https://preview.go-admin.dev

Bili.Uwp

by Richasy csharp

star image 4927 MIT

适用于新系统UI的哔哩

SteamTools

by SteamTools-Team csharp

star image 4384 GPL-3.0

🛠「Steam++」是一个包含多种Steam工具功能的工具箱。

1loc

by phuoc-ng typescript

star image 4176 MIT

What's your favorite JavaScript single LOC (line of code)?

aleph.js

by alephjs typescript

star image 3932 MIT

The Full-stack Framework in Deno.

Top Authors in Server

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157 Libraries

123166

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129 Libraries

3091

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113 Libraries

177734

7

101 Libraries

6817

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Trending Kits in Server

Node.js is a flexible and lightweight platform that allows developers to build fast and scalable applications that work brilliantly in real-time. Its event-driven, non-blocking I/O model makes it highly efficient for data-intensive applications that need to run across multiple devices. Ecommerce applications often run on Node payment processing software components. These components work towards ensuring the integration of payment gateways, thereby enabling multiple payment options and risk-free authentication. Some of these payment processing platforms may include PayPal, Apple Pay, Google Pay, UnionPay, and similar applications. JavaScript’s dynamic and flexible environment ensures that every payment system runs smoothly and efficiently in real-time. Here are our picks of the 15 best JavaScript Node.js payment processing libraries that are open source in 2022. expressCart - fully functioning Node.js shopping cart; stripe-node - Node.js library for the Stripe API; stripe-billing-typographic - Typographic is a complete, full-stack example of a Stripe Billing integration.

All secure systems on the internet use HTTPS, which means the encrypted data sent from a browser is decrypted only at the server end and vice versa. But even while storing this data, we need to ensure that it’s secure and unreadable by unauthorized personnel. This is now possible using JavaScript, where we can implement both symmetric key cryptography and asymmetric encryption using algorithms like Triple DES and AES, which use 128 bits key length and above for increased security. With this in mind, let’s look at some of the JavaScript encryption libraries. gun - open source cybersecurity protocol; jsencrypt - Javascript library to perform OpenSSL RSA Encryption; Forge - A fully native implementation of the TLS protocol in JavaScript, a set of cryptography utilities, and a set of tools for developing Web Apps that utilize many network resources. Full list of the best open-source JavaScript Encryption libraries below.

Health care industries around the globe are growing day by day. Equally pharmacy industry is rising to the same extent. The pharmacy system stores data, systemizes, and controls the use of the medication process with the pharmacies. The pharmacy management system helps the pharmacist maintain their stock and choose the right medicine by using the computer program. The pharmacist makes use of this system to control the pharmacy reliably. Patients sometimes prefer to visit the pharmacy instead of a doctor for minor illnesses, and the system enables the pharmacist to prescribe over-the-counter drugs for these ailments.

Use these Ruby gems to enable effective configuration, system and version management in code level for your application. Get ratings, code snippets & documentation for each library.

Use these currated libraries to integrate efficient database operations, functionalities and procedures in your PHP application. Get ratings, code snippets & documentation for each library.

Build wallets, mine coins, integrate with crypto exchanges, trading bots, and more for Dogecoin .Get ratings, code snippets & documentation for each library.

Build prototypes with ease of use and enhanced functionalities using Ruby.Get ratings, code snippets & documentation for each library.

Food wastage has increased and created a negative impact on the economic growth factors. Agricultural processing industries are taking the heat because of food wastage. We have to focus and create a food wastage measurement system, where it provides real-time input on the wastage of the food to the user. We can analyze and generate comparison reports to deliver a detailed insight to the higher management and user about the real-time food wastage analysis reports. We can easily estimate food wastage. Some of the libraries can help you to achieve this.

NFT's or Non Fungible Token's are a new technology phenomenon allowing clear ownership and easy transferability of digital art. This property means each token is unique and cannot be swapped identically for another token ever. NFT can be most anything digital, such as art, images, videos, music, memes, and tweets. The process of creating NFTs is “minting”, similar in concept to metal coins that are minted (stamped) to confirm their legitimacy. Minting an NFT produces a one-of-a-kind token on the blockchain and an electronic certificate of authenticity. NFT Marketplace for Images is used to generate the cryptoboy using the NFT, Blockchain, Cryptocurrency. The generated cryptoboy can be sold and they can see who is the token owner and also token metadata.

Training and Certification - NFT Marketplace for Images

Watch this self-guided tutorial on NFT Marketplace for Images. This includes an understanding of Metamask; a chrome extension used as a crypto wallet, Ganache-Truffle Suite a personal Ethereum Blockchain for distributed application development to build your own NFT Marketplace for CryptoBoy Images Completed the training? Apply for your Participation Certificate and Achievement Certificate now! Tag us on social media with a screenshot or video of your working application for a chance to be featured as an Open Source Champion and get a verified badge.

Installation Guide

⬇️Download, extract and double-click kit installer file to install the kit. Note: Do ensure to extract the zip file before running it.

Development Environment

VSCode is used for development and debugging. Node.js is an open-source, cross-platform, JavaScript runtime environment. It executes JavaScript code outside of a browser, whereas VSCode is used to get a typical experience of IDE for developers.

Tools

To make a Crypto boy you need to install truffle, Ganache CLI, npm, Metamask. Truffle framework is used as a testing framework and asset pipeline for blockchains using the Ethereum Virtual Machine (EVM). Ganache-CLI is the latest version of TestRPC and a fast and customizable blockchain emulator. npm is the default package manager for the JavaScript runtime environment Node.js. MetaMask is a software cryptocurrency wallet used to interact with the Ethereum blockchain.

Support

If you need help to use this kit, you can email us at kandi.support@openweaver.com or direct message us on Twitter Message Message @OpenWeaverInc.

This is spring boot library which is used to service registry

We encounter many situations where we need to insert document into database which is the main objective in our applications. Java has many libraries which provide the ability to work with mongodb. Mongo driver is a comprehensive and popular Java library. In this solution kit, I am sharing the code snippet and library that I use to insert document into mongodb using MongoClient in Java which can be executed directly in the IDE.


Fig 1: Preview of the output that you will get on running this code from your IDE

Code


  1. To use this code snippet, install mongodb. You can use this link to install.
  2. Copy the code using the "Copy" button above, and paste it in a Java file in your IDE.
  3. Add dependent library or download the dependent jar and add in your IDE class path.
  4. If you want to change the Database and collection name, you can modify it in the code.
  5. Run the file to insert a document into mongodb.

I hope you found this useful. I have added the link to dependent libraries, version information in the following sections.


I found this code snippet by searching for "mongodb insert document in java" in kandi. You can try any such use case!

Development Libraries


You can add the dependent library in your gradle or maven files. you can get the dependancy xml in above link

You can search for any dependent library on kandi like Mongo java driver

Environment Tested

I tested this solution in the following versions. Be mindful of changes when working with other versions.

  1. The solution is created in open-jdk-11.0.8.
  2. The solution is tested on Mongo java driver 3.12.11 version.
  3. The solution is tested on Mongodb 4.4.0 version.

Using this solution, we are able to download an file using the Mongo java driver library in Java with simple steps. This process also facilities an easy to use, hassle free method to create a hands-on working version of code which would help us to insert document into mongodb in Java.

Support

  1. For any support on kandi solution kits, please use the chat
  2. For further learning resources, visit the Open Weaver Community learning page.


GNU Chess is a chess-playing game. It can use it to play chess against the computer on a terminal or, more commonly, as the chess engine for graphical chess frontends such as XBoard.The game is designed for two players, who move 16 pieces according to fixed rules across a checkerboard and try to checkmate the opponent's king. Make a robotic manipulator that autonomously competes against either a human or robot opponent, playing on a physical board with physical pieces. Following are the steps to create your own Chess application, 1. Development Environment 2. Chessboard Creation 3. PGN image for Chess 4. Chess API

PGN image for Chess

Portable Game Notation is a notation used to record Chess games. It is easy to read by users and to process by computers.

Chess API

Chess API consists the Minimax and Alpha-beta Pruning algorithms.

Chessboard Creation

Chessboard creation to play the Chess.It has row and columns.

Development Environment

VS code is used for development of the Chess game.

Ruby is an object-oriented programming language. It was created by Yukihiro Matsumoto in 1995 with the intention of making programming more fun. It is a dynamic, reflective and it is focused on simplicity and productivity. Ruby has several applications, including web development and system administration. It can be used to build websites and perform many other tasks. Ruby Coding Assessment Libraries are an important part of the Ruby ecosystem. They help developers to evaluate their skills, document their experience and show their expertise. Ruby Coding Assessment libraries are the best places to find Ruby Coding Assessments. This is because they have a great collection of code examples and resources that can be used for Ruby Coding Assessments. Popular Ruby Coding Assessment open source libraries include: corneal - Ruby gem that is a Sinatra app generator; expertiza - web application; mumuki-laboratory - students practice and receive automated and human feedback.

Python is known for its general-purpose nature which makes it applicable in almost every domain of software development. Python makes its presence in every emerging field. It provides very high-level dynamic data types and supports dynamic type checking. It is the fastest-growing programming language and can develop any application. It was created by Guido van Rossum during 1985 - 1990. It supports functional and structured programming methods as well as OOP. It can be used as a scripting language or can be compiled to byte-code.

Advantages of Python :

Web Applications

Python is used to develop web applications. It provides libraries to handle internet protocols such as HTML and XML, JSON, Email processing, rbeautiful soupifulSoup, Feedparser, etc.

Desktop GUI Applications

The GUI stands for the Graphical User Interface, which provides a smooth interaction to any application. Python provides a Tk GUI library to develop a user interface.

Software Development

Python is useful for the software development process. It works as a support language and can be used to build control and management, testing, etc.

Scientific and Numeric

Python language is the most suitable language for Artificial intelligence or machine learning. It consists of many scientific and mathematical libraries, which makes easy to solve complex calculations.

Business and Enterprise Applications

Business Applications differ from standard applications. This kind of application requires extensively, scalability and readability, and Python provides all these features. An enterprise application is a large software system platform designed to operate in a corporate environment such as a business or government.

Audio or Video-based Applications

Python is flexible to perform multiple tasks and can be used to create multimedia applications. Some multimedia applications which are made by using Python are TimPlayer, cplay, etc.

Python is one of the most popular and versatile programming languages that can be used to build applications of several kinds. For web applications, Python enables developers to build the backend or server-side. It also has several frameworks and packages.

These frameworks help in easy and faster web development.

Django

Django is a free, open-source, and full-stack Python framework. You can use Django to create your web application from ground zero. The key feature of Django is that it tries to provide all of the necessary features by default as opposed to offering them as separate libraries.

Flask

Flask is another Python framework available under the BSD license. It is inspired by the Sinatra Ruby framework. Flask depends on the Werkzeug WSGI toolkit and the Jinja2 template. Flask is the opposite to Django, while Django bundled everything you need in one package, the main idea behind Flask is to help build a solid web application foundation.

Web2Py

Web2py is another popular, scalable, and open-source full-stack Python framework. There are many things to like about the Web2py framework like it comes with its own web-based IDE, which, among other things, includes a code editor, debugger, and one-click deployment. It is designed to guide a web developer to follow good software engineering practices, such as using the Model View Controller (MVC) pattern. Web2Py automatically addresses various issues that can lead to security vulnerabilities by following well-established practices. The framework includes a Database Abstraction Layer (DAL) that writes SQL dynamically.

Pyramid

Pyramid is a lightweight and open-source Python web framework. The framework provides only the core tools needed for nearly all web applications: mapping URLs to code, security, and serving static assets (files like JavaScript and CSS). It has New security APIs to support a massive overhaul of the authentication and authorisation system.

CherryPy

CherryPy is a popular object-oriented web framework in Python. The framework allows building web applications in a much simpler way. A powerful configuration system for developers and deployers alike. Built-in profiling, coverage, and testing support. Built-in tools for caching, encoding, sessions, authentication, static content etc.

Falcon

Falcon is a WSGI library for building speedy web APIs and app backends. The framework has CPython 3.5+ and PyPy 3.5+ support. Falcon complements more general Python web frameworks by providing extra reliability, flexibility, and performance. It includes a highly optimised and extensible codebase. Easy access to headers as well as bodies through the request and response objects. The framework provides DRY request processing via middleware components and hooks.

TurboGears

TurboGears is a Python web application framework. The next version, TurboGears 2, is built on top of several web frameworks, including TurboGears 1, Rails and Django. It is designed to be a web application framework suitable for solving complex industrial-strength problems. It has a transaction manager to help with multi-database deployments. It officially supports MongoDB as one of the primary storage backends.

Quixote

Quixote is a framework for writing Web-based applications using Python. The goal of this framework is to provide flexibility and high-performance during web development. It has Flexibility and high-performance. Quixote includes Python Template Language for producing HTML with Python code.

Bottle

The Bottle is another Python micro-framework, which makes it easy to start. Initially meant for building APIs, Bottle implements everything in a single source file. It has no dependencies apart from the Python Standard Library. Coding with Bottle gets you closer to the metal than coding with any full-stack framework. It has a fast and Pythonic *built-in template engine* and support for mako, jinja2 and cheetah templates. The framework has convenient access to form data, headers, file uploads, cookies, and other HTTP-related metadata. Built-in HTTP development server as well as support for bjoern, Google App Engine, fapws3, cherrypy or any other WSGI capable HTTP server.

This can be used to develop ML applications using python that can predict whether the news is fake. It uses python libraries like Pandas, NumPy, and sklearn for prediction and flask, HTML and CSS for web-end. The data from a dataset of 5000+ articles is used to train the model through supervised machine learning. The output accuracy is about 82%. This is made as a submission in 24hr AI Challenge. Github: https://github.com/Sjain14/Fake_news_detection

Node.js is a flexible and lightweight platform that allows developers to build fast and scalable applications that work brilliantly in real-time. Its event-driven, non-blocking I/O model makes it highly efficient for data-intensive applications that need to run across multiple devices. Ecommerce applications often run on Node payment processing software components. These components work towards ensuring the integration of payment gateways, thereby enabling multiple payment options and risk-free authentication. Some of these payment processing platforms may include PayPal, Apple Pay, Google Pay, UnionPay, and similar applications. JavaScript’s dynamic and flexible environment ensures that every payment system runs smoothly and efficiently in real-time. Here are our picks of the 15 best JavaScript Node.js payment processing libraries that are open source in 2022. expressCart - fully functioning Node.js shopping cart; stripe-node - Node.js library for the Stripe API; stripe-billing-typographic - Typographic is a complete, full-stack example of a Stripe Billing integration.

All secure systems on the internet use HTTPS, which means the encrypted data sent from a browser is decrypted only at the server end and vice versa. But even while storing this data, we need to ensure that it’s secure and unreadable by unauthorized personnel. This is now possible using JavaScript, where we can implement both symmetric key cryptography and asymmetric encryption using algorithms like Triple DES and AES, which use 128 bits key length and above for increased security. With this in mind, let’s look at some of the JavaScript encryption libraries. gun - open source cybersecurity protocol; jsencrypt - Javascript library to perform OpenSSL RSA Encryption; Forge - A fully native implementation of the TLS protocol in JavaScript, a set of cryptography utilities, and a set of tools for developing Web Apps that utilize many network resources. Full list of the best open-source JavaScript Encryption libraries below.

Health care industries around the globe are growing day by day. Equally pharmacy industry is rising to the same extent. The pharmacy system stores data, systemizes, and controls the use of the medication process with the pharmacies. The pharmacy management system helps the pharmacist maintain their stock and choose the right medicine by using the computer program. The pharmacist makes use of this system to control the pharmacy reliably. Patients sometimes prefer to visit the pharmacy instead of a doctor for minor illnesses, and the system enables the pharmacist to prescribe over-the-counter drugs for these ailments.

Use these Ruby gems to enable effective configuration, system and version management in code level for your application. Get ratings, code snippets & documentation for each library.

Use these currated libraries to integrate efficient database operations, functionalities and procedures in your PHP application. Get ratings, code snippets & documentation for each library.

Build wallets, mine coins, integrate with crypto exchanges, trading bots, and more for Dogecoin .Get ratings, code snippets & documentation for each library.

Build prototypes with ease of use and enhanced functionalities using Ruby.Get ratings, code snippets & documentation for each library.

Food wastage has increased and created a negative impact on the economic growth factors. Agricultural processing industries are taking the heat because of food wastage. We have to focus and create a food wastage measurement system, where it provides real-time input on the wastage of the food to the user. We can analyze and generate comparison reports to deliver a detailed insight to the higher management and user about the real-time food wastage analysis reports. We can easily estimate food wastage. Some of the libraries can help you to achieve this.

NFT's or Non Fungible Token's are a new technology phenomenon allowing clear ownership and easy transferability of digital art. This property means each token is unique and cannot be swapped identically for another token ever. NFT can be most anything digital, such as art, images, videos, music, memes, and tweets. The process of creating NFTs is “minting”, similar in concept to metal coins that are minted (stamped) to confirm their legitimacy. Minting an NFT produces a one-of-a-kind token on the blockchain and an electronic certificate of authenticity. NFT Marketplace for Images is used to generate the cryptoboy using the NFT, Blockchain, Cryptocurrency. The generated cryptoboy can be sold and they can see who is the token owner and also token metadata.

Training and Certification - NFT Marketplace for Images

Watch this self-guided tutorial on NFT Marketplace for Images. This includes an understanding of Metamask; a chrome extension used as a crypto wallet, Ganache-Truffle Suite a personal Ethereum Blockchain for distributed application development to build your own NFT Marketplace for CryptoBoy Images Completed the training? Apply for your Participation Certificate and Achievement Certificate now! Tag us on social media with a screenshot or video of your working application for a chance to be featured as an Open Source Champion and get a verified badge.

Installation Guide

⬇️Download, extract and double-click kit installer file to install the kit. Note: Do ensure to extract the zip file before running it.

Development Environment

VSCode is used for development and debugging. Node.js is an open-source, cross-platform, JavaScript runtime environment. It executes JavaScript code outside of a browser, whereas VSCode is used to get a typical experience of IDE for developers.

Tools

To make a Crypto boy you need to install truffle, Ganache CLI, npm, Metamask. Truffle framework is used as a testing framework and asset pipeline for blockchains using the Ethereum Virtual Machine (EVM). Ganache-CLI is the latest version of TestRPC and a fast and customizable blockchain emulator. npm is the default package manager for the JavaScript runtime environment Node.js. MetaMask is a software cryptocurrency wallet used to interact with the Ethereum blockchain.

Support

If you need help to use this kit, you can email us at kandi.support@openweaver.com or direct message us on Twitter Message Message @OpenWeaverInc.

This is spring boot library which is used to service registry

We encounter many situations where we need to insert document into database which is the main objective in our applications. Java has many libraries which provide the ability to work with mongodb. Mongo driver is a comprehensive and popular Java library. In this solution kit, I am sharing the code snippet and library that I use to insert document into mongodb using MongoClient in Java which can be executed directly in the IDE.


Fig 1: Preview of the output that you will get on running this code from your IDE

Code


  1. To use this code snippet, install mongodb. You can use this link to install.
  2. Copy the code using the "Copy" button above, and paste it in a Java file in your IDE.
  3. Add dependent library or download the dependent jar and add in your IDE class path.
  4. If you want to change the Database and collection name, you can modify it in the code.
  5. Run the file to insert a document into mongodb.

I hope you found this useful. I have added the link to dependent libraries, version information in the following sections.


I found this code snippet by searching for "mongodb insert document in java" in kandi. You can try any such use case!

Development Libraries


You can add the dependent library in your gradle or maven files. you can get the dependancy xml in above link

You can search for any dependent library on kandi like Mongo java driver

Environment Tested

I tested this solution in the following versions. Be mindful of changes when working with other versions.

  1. The solution is created in open-jdk-11.0.8.
  2. The solution is tested on Mongo java driver 3.12.11 version.
  3. The solution is tested on Mongodb 4.4.0 version.

Using this solution, we are able to download an file using the Mongo java driver library in Java with simple steps. This process also facilities an easy to use, hassle free method to create a hands-on working version of code which would help us to insert document into mongodb in Java.

Support

  1. For any support on kandi solution kits, please use the chat
  2. For further learning resources, visit the Open Weaver Community learning page.


GNU Chess is a chess-playing game. It can use it to play chess against the computer on a terminal or, more commonly, as the chess engine for graphical chess frontends such as XBoard.The game is designed for two players, who move 16 pieces according to fixed rules across a checkerboard and try to checkmate the opponent's king. Make a robotic manipulator that autonomously competes against either a human or robot opponent, playing on a physical board with physical pieces. Following are the steps to create your own Chess application, 1. Development Environment 2. Chessboard Creation 3. PGN image for Chess 4. Chess API

PGN image for Chess

Portable Game Notation is a notation used to record Chess games. It is easy to read by users and to process by computers.

Chess API

Chess API consists the Minimax and Alpha-beta Pruning algorithms.

Chessboard Creation

Chessboard creation to play the Chess.It has row and columns.

Development Environment

VS code is used for development of the Chess game.

Ruby is an object-oriented programming language. It was created by Yukihiro Matsumoto in 1995 with the intention of making programming more fun. It is a dynamic, reflective and it is focused on simplicity and productivity. Ruby has several applications, including web development and system administration. It can be used to build websites and perform many other tasks. Ruby Coding Assessment Libraries are an important part of the Ruby ecosystem. They help developers to evaluate their skills, document their experience and show their expertise. Ruby Coding Assessment libraries are the best places to find Ruby Coding Assessments. This is because they have a great collection of code examples and resources that can be used for Ruby Coding Assessments. Popular Ruby Coding Assessment open source libraries include: corneal - Ruby gem that is a Sinatra app generator; expertiza - web application; mumuki-laboratory - students practice and receive automated and human feedback.

Python is known for its general-purpose nature which makes it applicable in almost every domain of software development. Python makes its presence in every emerging field. It provides very high-level dynamic data types and supports dynamic type checking. It is the fastest-growing programming language and can develop any application. It was created by Guido van Rossum during 1985 - 1990. It supports functional and structured programming methods as well as OOP. It can be used as a scripting language or can be compiled to byte-code.

Advantages of Python :

Web Applications

Python is used to develop web applications. It provides libraries to handle internet protocols such as HTML and XML, JSON, Email processing, rbeautiful soupifulSoup, Feedparser, etc.

Desktop GUI Applications

The GUI stands for the Graphical User Interface, which provides a smooth interaction to any application. Python provides a Tk GUI library to develop a user interface.

Software Development

Python is useful for the software development process. It works as a support language and can be used to build control and management, testing, etc.

Scientific and Numeric

Python language is the most suitable language for Artificial intelligence or machine learning. It consists of many scientific and mathematical libraries, which makes easy to solve complex calculations.

Business and Enterprise Applications

Business Applications differ from standard applications. This kind of application requires extensively, scalability and readability, and Python provides all these features. An enterprise application is a large software system platform designed to operate in a corporate environment such as a business or government.

Audio or Video-based Applications

Python is flexible to perform multiple tasks and can be used to create multimedia applications. Some multimedia applications which are made by using Python are TimPlayer, cplay, etc.

Python is one of the most popular and versatile programming languages that can be used to build applications of several kinds. For web applications, Python enables developers to build the backend or server-side. It also has several frameworks and packages.

These frameworks help in easy and faster web development.

Django

Django is a free, open-source, and full-stack Python framework. You can use Django to create your web application from ground zero. The key feature of Django is that it tries to provide all of the necessary features by default as opposed to offering them as separate libraries.

Flask

Flask is another Python framework available under the BSD license. It is inspired by the Sinatra Ruby framework. Flask depends on the Werkzeug WSGI toolkit and the Jinja2 template. Flask is the opposite to Django, while Django bundled everything you need in one package, the main idea behind Flask is to help build a solid web application foundation.

Web2Py

Web2py is another popular, scalable, and open-source full-stack Python framework. There are many things to like about the Web2py framework like it comes with its own web-based IDE, which, among other things, includes a code editor, debugger, and one-click deployment. It is designed to guide a web developer to follow good software engineering practices, such as using the Model View Controller (MVC) pattern. Web2Py automatically addresses various issues that can lead to security vulnerabilities by following well-established practices. The framework includes a Database Abstraction Layer (DAL) that writes SQL dynamically.

Pyramid

Pyramid is a lightweight and open-source Python web framework. The framework provides only the core tools needed for nearly all web applications: mapping URLs to code, security, and serving static assets (files like JavaScript and CSS). It has New security APIs to support a massive overhaul of the authentication and authorisation system.

CherryPy

CherryPy is a popular object-oriented web framework in Python. The framework allows building web applications in a much simpler way. A powerful configuration system for developers and deployers alike. Built-in profiling, coverage, and testing support. Built-in tools for caching, encoding, sessions, authentication, static content etc.

Falcon

Falcon is a WSGI library for building speedy web APIs and app backends. The framework has CPython 3.5+ and PyPy 3.5+ support. Falcon complements more general Python web frameworks by providing extra reliability, flexibility, and performance. It includes a highly optimised and extensible codebase. Easy access to headers as well as bodies through the request and response objects. The framework provides DRY request processing via middleware components and hooks.

TurboGears

TurboGears is a Python web application framework. The next version, TurboGears 2, is built on top of several web frameworks, including TurboGears 1, Rails and Django. It is designed to be a web application framework suitable for solving complex industrial-strength problems. It has a transaction manager to help with multi-database deployments. It officially supports MongoDB as one of the primary storage backends.

Quixote

Quixote is a framework for writing Web-based applications using Python. The goal of this framework is to provide flexibility and high-performance during web development. It has Flexibility and high-performance. Quixote includes Python Template Language for producing HTML with Python code.

Bottle

The Bottle is another Python micro-framework, which makes it easy to start. Initially meant for building APIs, Bottle implements everything in a single source file. It has no dependencies apart from the Python Standard Library. Coding with Bottle gets you closer to the metal than coding with any full-stack framework. It has a fast and Pythonic *built-in template engine* and support for mako, jinja2 and cheetah templates. The framework has convenient access to form data, headers, file uploads, cookies, and other HTTP-related metadata. Built-in HTTP development server as well as support for bjoern, Google App Engine, fapws3, cherrypy or any other WSGI capable HTTP server.

This can be used to develop ML applications using python that can predict whether the news is fake. It uses python libraries like Pandas, NumPy, and sklearn for prediction and flask, HTML and CSS for web-end. The data from a dataset of 5000+ articles is used to train the model through supervised machine learning. The output accuracy is about 82%. This is made as a submission in 24hr AI Challenge. Github: https://github.com/Sjain14/Fake_news_detection

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QUESTION

psql: error: connection to server on socket &quot;/tmp/.s.PGSQL.5432&quot; failed: No such file or directory

Asked 2022-Apr-04 at 15:46

Not really sure what caused this but most likely exiting the terminal while my rails server which was connected to PostgreSQL database was closed (not a good practice I know but lesson learned!)

I've already tried the following:

  1. Rebooting my machine (using MBA M1 2020)
  2. Restarting PostgreSQL using homebrew brew services restart postgresql
  3. Re-installing PostgreSQL using Homebrew
  4. Updating PostgreSQL using Homebrew
  5. I also tried following this link but when I run cd Library/Application\ Support/Postgres terminal tells me Postgres folder doesn't exist, so I'm kind of lost already. Although I have a feeling that deleting postmaster.pid would really fix my issue. Any help would be appreciated!

ANSWER

Answered 2022-Jan-13 at 15:19
Resetting PostgreSQL

My original answer only included the troubleshooting steps below, and a workaround. I now decided to properly fix it via brute force by removing all clusters and reinstalling, since I didn't have any data there to keep. It was something along these lines, on my Ubuntu 21.04 system:

copy icondownload icon

1sudo pg_dropcluster --stop 12 main
2sudo pg_dropcluster --stop 14 main
3sudo apt remove postgresql-14
4sudo apt purge postgresql*
5sudo apt install postgresql-14
6

Now I have:

copy icondownload icon

1sudo pg_dropcluster --stop 12 main
2sudo pg_dropcluster --stop 14 main
3sudo apt remove postgresql-14
4sudo apt purge postgresql*
5sudo apt install postgresql-14
6$ pg_lsclusters
7Ver Cluster Port Status Owner    Data directory              Log file
814  main    5432 online postgres /var/lib/postgresql/14/main /var/log/postgresql/postgresql-14-main.log
9

And sudo -u postgres psql works fine. The service was started automatically but it can be done manually with sudo systemctl start postgresql.

Incidentally, I can recommend the PostgreSQL docker image, which eliminates the need to bother with a local installation.

Troubleshooting

Although I cannot provide an answer to your specific problem, I thought I'd share my troubleshooting steps, hoping that it might be of some help. It seems that you are on Mac, whereas I am running Ubuntu 21.04, so expect things to be different.

This is a client connection problem, as noted by section 19.3.2 in the docs.

The directory in my error message is different:

copy icondownload icon

1sudo pg_dropcluster --stop 12 main
2sudo pg_dropcluster --stop 14 main
3sudo apt remove postgresql-14
4sudo apt purge postgresql*
5sudo apt install postgresql-14
6$ pg_lsclusters
7Ver Cluster Port Status Owner    Data directory              Log file
814  main    5432 online postgres /var/lib/postgresql/14/main /var/log/postgresql/postgresql-14-main.log
9$ sudo su postgres -c &quot;psql&quot;
10psql: error: connection to server on socket &quot;/var/run/postgresql/.s.PGSQL.5432&quot; failed: No such file or directory
11        Is the server running locally and accepting connections on that socket?
12

I checked what unix sockets I had in that directory:

copy icondownload icon

1sudo pg_dropcluster --stop 12 main
2sudo pg_dropcluster --stop 14 main
3sudo apt remove postgresql-14
4sudo apt purge postgresql*
5sudo apt install postgresql-14
6$ pg_lsclusters
7Ver Cluster Port Status Owner    Data directory              Log file
814  main    5432 online postgres /var/lib/postgresql/14/main /var/log/postgresql/postgresql-14-main.log
9$ sudo su postgres -c &quot;psql&quot;
10psql: error: connection to server on socket &quot;/var/run/postgresql/.s.PGSQL.5432&quot; failed: No such file or directory
11        Is the server running locally and accepting connections on that socket?
12$ ls -lah /var/run/postgresql/
13total 8.0K
14drwxrwsr-x  4 postgres postgres  160 Oct 29 16:40 .
15drwxr-xr-x 36 root     root     1.1K Oct 29 14:08 ..
16drwxr-s---  2 postgres postgres   40 Oct 29 14:33 12-main.pg_stat_tmp
17drwxr-s---  2 postgres postgres  120 Oct 29 16:59 14-main.pg_stat_tmp
18-rw-r--r--  1 postgres postgres    6 Oct 29 16:36 14-main.pid
19srwxrwxrwx  1 postgres postgres    0 Oct 29 16:36 .s.PGSQL.5433
20-rw-------  1 postgres postgres   70 Oct 29 16:36 .s.PGSQL.5433.lock
21

Makes sense, there is a socket for 5433 not 5432. I confirmed this by running:

copy icondownload icon

1sudo pg_dropcluster --stop 12 main
2sudo pg_dropcluster --stop 14 main
3sudo apt remove postgresql-14
4sudo apt purge postgresql*
5sudo apt install postgresql-14
6$ pg_lsclusters
7Ver Cluster Port Status Owner    Data directory              Log file
814  main    5432 online postgres /var/lib/postgresql/14/main /var/log/postgresql/postgresql-14-main.log
9$ sudo su postgres -c &quot;psql&quot;
10psql: error: connection to server on socket &quot;/var/run/postgresql/.s.PGSQL.5432&quot; failed: No such file or directory
11        Is the server running locally and accepting connections on that socket?
12$ ls -lah /var/run/postgresql/
13total 8.0K
14drwxrwsr-x  4 postgres postgres  160 Oct 29 16:40 .
15drwxr-xr-x 36 root     root     1.1K Oct 29 14:08 ..
16drwxr-s---  2 postgres postgres   40 Oct 29 14:33 12-main.pg_stat_tmp
17drwxr-s---  2 postgres postgres  120 Oct 29 16:59 14-main.pg_stat_tmp
18-rw-r--r--  1 postgres postgres    6 Oct 29 16:36 14-main.pid
19srwxrwxrwx  1 postgres postgres    0 Oct 29 16:36 .s.PGSQL.5433
20-rw-------  1 postgres postgres   70 Oct 29 16:36 .s.PGSQL.5433.lock
21$ pg_lsclusters
22Ver Cluster Port Status                Owner    Data directory              Log file
2312  main    5432 down,binaries_missing postgres /var/lib/postgresql/12/main /var/log/postgresql/postgresql-12-main.log
2414  main    5433 online                postgres /var/lib/postgresql/14/main /var/log/postgresql/postgresql-14-main.log
25

This explains how it got into this mess on my system. The default port is 5432, but after I upgraded from version 12 to 14, the server was setup to listen to 5433, presumably because it considered 5432 as already taken. Two alternatives here, get the server to listen on 5432 which is the client's default, or get the client to use 5433.

Let's try it by changing the client's parameters:

copy icondownload icon

1sudo pg_dropcluster --stop 12 main
2sudo pg_dropcluster --stop 14 main
3sudo apt remove postgresql-14
4sudo apt purge postgresql*
5sudo apt install postgresql-14
6$ pg_lsclusters
7Ver Cluster Port Status Owner    Data directory              Log file
814  main    5432 online postgres /var/lib/postgresql/14/main /var/log/postgresql/postgresql-14-main.log
9$ sudo su postgres -c &quot;psql&quot;
10psql: error: connection to server on socket &quot;/var/run/postgresql/.s.PGSQL.5432&quot; failed: No such file or directory
11        Is the server running locally and accepting connections on that socket?
12$ ls -lah /var/run/postgresql/
13total 8.0K
14drwxrwsr-x  4 postgres postgres  160 Oct 29 16:40 .
15drwxr-xr-x 36 root     root     1.1K Oct 29 14:08 ..
16drwxr-s---  2 postgres postgres   40 Oct 29 14:33 12-main.pg_stat_tmp
17drwxr-s---  2 postgres postgres  120 Oct 29 16:59 14-main.pg_stat_tmp
18-rw-r--r--  1 postgres postgres    6 Oct 29 16:36 14-main.pid
19srwxrwxrwx  1 postgres postgres    0 Oct 29 16:36 .s.PGSQL.5433
20-rw-------  1 postgres postgres   70 Oct 29 16:36 .s.PGSQL.5433.lock
21$ pg_lsclusters
22Ver Cluster Port Status                Owner    Data directory              Log file
2312  main    5432 down,binaries_missing postgres /var/lib/postgresql/12/main /var/log/postgresql/postgresql-12-main.log
2414  main    5433 online                postgres /var/lib/postgresql/14/main /var/log/postgresql/postgresql-14-main.log
25$ sudo su postgres -c &quot;psql --port=5433&quot;
26psql (14.0 (Ubuntu 14.0-1.pgdg21.04+1))
27Type &quot;help&quot; for help.
28
29postgres=#
30

It worked! Now, to make it permanent I'm supposed to put this setting on a psqlrc or ~/.psqlrc file. The thin documentation on this (under "Files") was not helpful to me as I was not sure on the syntax and my attempts did not change the client's default, so I moved on.

To change the server I looked for the postgresql.conf mentioned in the documentation but could not find the file. I did however see /var/lib/postgresql/14/main/postgresql.auto.conf so I created it on the same directory with the content:

copy icondownload icon

1sudo pg_dropcluster --stop 12 main
2sudo pg_dropcluster --stop 14 main
3sudo apt remove postgresql-14
4sudo apt purge postgresql*
5sudo apt install postgresql-14
6$ pg_lsclusters
7Ver Cluster Port Status Owner    Data directory              Log file
814  main    5432 online postgres /var/lib/postgresql/14/main /var/log/postgresql/postgresql-14-main.log
9$ sudo su postgres -c &quot;psql&quot;
10psql: error: connection to server on socket &quot;/var/run/postgresql/.s.PGSQL.5432&quot; failed: No such file or directory
11        Is the server running locally and accepting connections on that socket?
12$ ls -lah /var/run/postgresql/
13total 8.0K
14drwxrwsr-x  4 postgres postgres  160 Oct 29 16:40 .
15drwxr-xr-x 36 root     root     1.1K Oct 29 14:08 ..
16drwxr-s---  2 postgres postgres   40 Oct 29 14:33 12-main.pg_stat_tmp
17drwxr-s---  2 postgres postgres  120 Oct 29 16:59 14-main.pg_stat_tmp
18-rw-r--r--  1 postgres postgres    6 Oct 29 16:36 14-main.pid
19srwxrwxrwx  1 postgres postgres    0 Oct 29 16:36 .s.PGSQL.5433
20-rw-------  1 postgres postgres   70 Oct 29 16:36 .s.PGSQL.5433.lock
21$ pg_lsclusters
22Ver Cluster Port Status                Owner    Data directory              Log file
2312  main    5432 down,binaries_missing postgres /var/lib/postgresql/12/main /var/log/postgresql/postgresql-12-main.log
2414  main    5433 online                postgres /var/lib/postgresql/14/main /var/log/postgresql/postgresql-14-main.log
25$ sudo su postgres -c &quot;psql --port=5433&quot;
26psql (14.0 (Ubuntu 14.0-1.pgdg21.04+1))
27Type &quot;help&quot; for help.
28
29postgres=#
30port = 5432
31

Restarted the server: sudo systemctl restart postgresql

But the error persisted because, as the logs confirmed, the port did not change:

copy icondownload icon

1sudo pg_dropcluster --stop 12 main
2sudo pg_dropcluster --stop 14 main
3sudo apt remove postgresql-14
4sudo apt purge postgresql*
5sudo apt install postgresql-14
6$ pg_lsclusters
7Ver Cluster Port Status Owner    Data directory              Log file
814  main    5432 online postgres /var/lib/postgresql/14/main /var/log/postgresql/postgresql-14-main.log
9$ sudo su postgres -c &quot;psql&quot;
10psql: error: connection to server on socket &quot;/var/run/postgresql/.s.PGSQL.5432&quot; failed: No such file or directory
11        Is the server running locally and accepting connections on that socket?
12$ ls -lah /var/run/postgresql/
13total 8.0K
14drwxrwsr-x  4 postgres postgres  160 Oct 29 16:40 .
15drwxr-xr-x 36 root     root     1.1K Oct 29 14:08 ..
16drwxr-s---  2 postgres postgres   40 Oct 29 14:33 12-main.pg_stat_tmp
17drwxr-s---  2 postgres postgres  120 Oct 29 16:59 14-main.pg_stat_tmp
18-rw-r--r--  1 postgres postgres    6 Oct 29 16:36 14-main.pid
19srwxrwxrwx  1 postgres postgres    0 Oct 29 16:36 .s.PGSQL.5433
20-rw-------  1 postgres postgres   70 Oct 29 16:36 .s.PGSQL.5433.lock
21$ pg_lsclusters
22Ver Cluster Port Status                Owner    Data directory              Log file
2312  main    5432 down,binaries_missing postgres /var/lib/postgresql/12/main /var/log/postgresql/postgresql-12-main.log
2414  main    5433 online                postgres /var/lib/postgresql/14/main /var/log/postgresql/postgresql-14-main.log
25$ sudo su postgres -c &quot;psql --port=5433&quot;
26psql (14.0 (Ubuntu 14.0-1.pgdg21.04+1))
27Type &quot;help&quot; for help.
28
29postgres=#
30port = 5432
31$ tail /var/log/postgresql/postgresql-14-main.log
32...
332021-10-29 16:36:12.195 UTC [25236] LOG:  listening on IPv4 address &quot;127.0.0.1&quot;, port 5433
342021-10-29 16:36:12.198 UTC [25236] LOG:  listening on Unix socket &quot;/var/run/postgresql/.s.PGSQL.5433&quot;
352021-10-29 16:36:12.204 UTC [25237] LOG:  database system was shut down at 2021-10-29 16:36:12 UTC
362021-10-29 16:36:12.210 UTC [25236] LOG:  database system is ready to accept connections
37

After other attempts did not succeed, I eventually decided to use a workaround: to redirect the client's requests on 5432 to 5433:

copy icondownload icon

1sudo pg_dropcluster --stop 12 main
2sudo pg_dropcluster --stop 14 main
3sudo apt remove postgresql-14
4sudo apt purge postgresql*
5sudo apt install postgresql-14
6$ pg_lsclusters
7Ver Cluster Port Status Owner    Data directory              Log file
814  main    5432 online postgres /var/lib/postgresql/14/main /var/log/postgresql/postgresql-14-main.log
9$ sudo su postgres -c &quot;psql&quot;
10psql: error: connection to server on socket &quot;/var/run/postgresql/.s.PGSQL.5432&quot; failed: No such file or directory
11        Is the server running locally and accepting connections on that socket?
12$ ls -lah /var/run/postgresql/
13total 8.0K
14drwxrwsr-x  4 postgres postgres  160 Oct 29 16:40 .
15drwxr-xr-x 36 root     root     1.1K Oct 29 14:08 ..
16drwxr-s---  2 postgres postgres   40 Oct 29 14:33 12-main.pg_stat_tmp
17drwxr-s---  2 postgres postgres  120 Oct 29 16:59 14-main.pg_stat_tmp
18-rw-r--r--  1 postgres postgres    6 Oct 29 16:36 14-main.pid
19srwxrwxrwx  1 postgres postgres    0 Oct 29 16:36 .s.PGSQL.5433
20-rw-------  1 postgres postgres   70 Oct 29 16:36 .s.PGSQL.5433.lock
21$ pg_lsclusters
22Ver Cluster Port Status                Owner    Data directory              Log file
2312  main    5432 down,binaries_missing postgres /var/lib/postgresql/12/main /var/log/postgresql/postgresql-12-main.log
2414  main    5433 online                postgres /var/lib/postgresql/14/main /var/log/postgresql/postgresql-14-main.log
25$ sudo su postgres -c &quot;psql --port=5433&quot;
26psql (14.0 (Ubuntu 14.0-1.pgdg21.04+1))
27Type &quot;help&quot; for help.
28
29postgres=#
30port = 5432
31$ tail /var/log/postgresql/postgresql-14-main.log
32...
332021-10-29 16:36:12.195 UTC [25236] LOG:  listening on IPv4 address &quot;127.0.0.1&quot;, port 5433
342021-10-29 16:36:12.198 UTC [25236] LOG:  listening on Unix socket &quot;/var/run/postgresql/.s.PGSQL.5433&quot;
352021-10-29 16:36:12.204 UTC [25237] LOG:  database system was shut down at 2021-10-29 16:36:12 UTC
362021-10-29 16:36:12.210 UTC [25236] LOG:  database system is ready to accept connections
37ln -s /var/run/postgresql/.s.PGSQL.5433 /var/run/postgresql/.s.PGSQL.5432
38

This is what I have now:

copy icondownload icon

1sudo pg_dropcluster --stop 12 main
2sudo pg_dropcluster --stop 14 main
3sudo apt remove postgresql-14
4sudo apt purge postgresql*
5sudo apt install postgresql-14
6$ pg_lsclusters
7Ver Cluster Port Status Owner    Data directory              Log file
814  main    5432 online postgres /var/lib/postgresql/14/main /var/log/postgresql/postgresql-14-main.log
9$ sudo su postgres -c &quot;psql&quot;
10psql: error: connection to server on socket &quot;/var/run/postgresql/.s.PGSQL.5432&quot; failed: No such file or directory
11        Is the server running locally and accepting connections on that socket?
12$ ls -lah /var/run/postgresql/
13total 8.0K
14drwxrwsr-x  4 postgres postgres  160 Oct 29 16:40 .
15drwxr-xr-x 36 root     root     1.1K Oct 29 14:08 ..
16drwxr-s---  2 postgres postgres   40 Oct 29 14:33 12-main.pg_stat_tmp
17drwxr-s---  2 postgres postgres  120 Oct 29 16:59 14-main.pg_stat_tmp
18-rw-r--r--  1 postgres postgres    6 Oct 29 16:36 14-main.pid
19srwxrwxrwx  1 postgres postgres    0 Oct 29 16:36 .s.PGSQL.5433
20-rw-------  1 postgres postgres   70 Oct 29 16:36 .s.PGSQL.5433.lock
21$ pg_lsclusters
22Ver Cluster Port Status                Owner    Data directory              Log file
2312  main    5432 down,binaries_missing postgres /var/lib/postgresql/12/main /var/log/postgresql/postgresql-12-main.log
2414  main    5433 online                postgres /var/lib/postgresql/14/main /var/log/postgresql/postgresql-14-main.log
25$ sudo su postgres -c &quot;psql --port=5433&quot;
26psql (14.0 (Ubuntu 14.0-1.pgdg21.04+1))
27Type &quot;help&quot; for help.
28
29postgres=#
30port = 5432
31$ tail /var/log/postgresql/postgresql-14-main.log
32...
332021-10-29 16:36:12.195 UTC [25236] LOG:  listening on IPv4 address &quot;127.0.0.1&quot;, port 5433
342021-10-29 16:36:12.198 UTC [25236] LOG:  listening on Unix socket &quot;/var/run/postgresql/.s.PGSQL.5433&quot;
352021-10-29 16:36:12.204 UTC [25237] LOG:  database system was shut down at 2021-10-29 16:36:12 UTC
362021-10-29 16:36:12.210 UTC [25236] LOG:  database system is ready to accept connections
37ln -s /var/run/postgresql/.s.PGSQL.5433 /var/run/postgresql/.s.PGSQL.5432
38$ ls -lah /var/run/postgresql/
39total 8.0K
40drwxrwsr-x  4 postgres postgres  160 Oct 29 16:40 .
41drwxr-xr-x 36 root     root     1.1K Oct 29 14:08 ..
42drwxr-s---  2 postgres postgres   40 Oct 29 14:33 12-main.pg_stat_tmp
43drwxr-s---  2 postgres postgres  120 Oct 29 16:59 14-main.pg_stat_tmp
44-rw-r--r--  1 postgres postgres    6 Oct 29 16:36 14-main.pid
45lrwxrwxrwx  1 postgres postgres   33 Oct 29 16:40 .s.PGSQL.5432 -&gt; /var/run/postgresql/.s.PGSQL.5433
46srwxrwxrwx  1 postgres postgres    0 Oct 29 16:36 .s.PGSQL.5433
47-rw-------  1 postgres postgres   70 Oct 29 16:36 .s.PGSQL.5433.lock
48

This means I can now just run psql without having to explicitly set the port to 5433. Now, this is a hack and I would not recommend it. But in my development system I am happy with it for now, because I don't have more time to spend on this. This is why I shared the steps and the links so that you can find a proper solution for your case.

Source https://stackoverflow.com/questions/69754628