Quantcast
Channel: Linux Guides, Tips and Tutorials | LinuxScrew
Browsing index pages (314 articles)

Installing/Upgrading VirtualBox Guest Additions on Linux Desktop/Server

This article will describe how to install or update VirtualBox Guest Additions in Linux, showing the commands you need to run. VirtualBox is a free, open source virtualization platform that allows you...

View Article


PostgreSQL Configuration: Port/Host, Memory, Temp File Limits

This article will show you how to find your PostgreSQL configuration file, and change the port and host, maximum connections, temporary file and memory limits for PostgreSQL on Linux. Once you have...

View Article


How to Change A User Password in PostgreSQL

This article will explain how to change a user’s password in PostgreSQL. PostgreSQL is one of the most popular database systems due to its flexibility and support for granular permissions and user...

View Article

How to Set Up Users and Roles in PostgreSQL

This article will show you how to set up user roles in PostgreSQL, and provide code examples. User roles are one of the best features of the PostgreSQL database system. This feature lets you group...

View Article

Enabling PostgreSQL Logging and Query Logging

This article explains how to enable query logging in PostgreSQL. One of the most useful features of PostgreSQL includes is query logging, which allows you to better understand the performance of your...

View Article


How to Comment PostgreSQL Queries/Code, and the PostgreSQL COMMENT Statement

This short article will explain the difference between comments in PostgreSQL code and the COMMENT statement, and show you how to use both. It will show you how to add comments to your PostgreSQL...

View Article

How to Persist Data When Using PostgreSQL in Docker Containers

This tutorial will demonstrate how to persist PostgreSQL database data when running PostgreSQL in Docker, by storing the data outside of the container. Docker lets you run PostgreSQL without having to...

View Article

How to Drop/Delete/Destroy a Database in PostgreSQL

This short tutorial will show you how to completely delete a database from PostgreSQL, and provide code examples. Before you Delete a Database… There are a few things you should do before you try and...

View Article


How to Run PostgreSQL in a Docker Container in Linux

This article will demonstrate how to run the PostgreSQL database service in a Docker container. Docker lets you run software in isolated environments that encapsulate specific configurations, software...

View Article


How to Drop/Delete/Destroy a Table Column in PostgreSQL

This quick tutorial will show you how to delete/destroy/drop a table column in a PostgreSQL database. Before you Delete a Table in your Database… There are a few things you should do before you try...

View Article

How to Install PostgreSQL on Linux (Ubuntu/Debian/Arch/Red Hat/Fedora)

This article will instruct you how to install the PostgreSQL database server on Linux – Red Hat/Fedora, Ubuntu, Debian, and Arch Linux. Installing PostgreSQL on Debian Linux Here’s now to install...

View Article

Image may be NSFW.
Clik here to view.

How to Convert a USB Printer to Wireless with a Raspberry Pi

This tutorial will show you how to turn a USB printer into a wireless, AirPrint enabled printer using a Raspberry Pi. The shared printer will be accessible from Windows, Mac and of course, Linux...

View Article

PostgreSQL vs Oracle – What’s the Difference? Which Should I Use?

This article will explain the differences between PostgreSQL and Oracle Database, and help you to decide which you should use in your project (The answer is PostgreSQL). Choosing the right database...

View Article


Image may be NSFW.
Clik here to view.

How to Use a Raspberry Pi for Digital Signage

This tutorial will show you how to set up your Raspberry Pi with info-beamer and a TV to use as digital signage for your shop, office, school… or anywhere really. Digital signage is super useful. You...

View Article

Image may be NSFW.
Clik here to view.

How to Share a Printer using AirPrint with a Raspberry Pi

This tutorial will show you how to share your USB printer with iPhones and iPads using AirPrint from a Raspberry Pi. AirPrint is Apple’s printer sharing technology and is required to print from iOS...

View Article


The Worst Things You’ll Probably Google As a Programmer on Linux

Programming terminology isn’t always well thought out. Language changes, or the people building out languages don’t consider the full implications of what a function or program or program name may...

View Article

How to Declare Variables in PHP (Constants, Static, Global)

This article shows you how to declare variables in PHP, including constant, static, and global variables. Code examples are provided. What is a Variable? In computer programming, a variable stores a...

View Article


How to Check What Version of PostgreSQL You are Running on Linux

This article will show you how to check the version (or versions) of PostgreSQL running on your Linux system. As it is possible to install multiple versions of PostgreSQL on the same machine, there...

View Article

Safely Using PHP Variable Variables with Arrays [Examples]

PHP variable variables are a powerful way to add flexibility to your code. This article explains the pitfalls and solutions to using them with arrays. Variable variables are a great way to simplify...

View Article

How to Test Connection to PostgreSQL Database on Linux (Ubuntu/Debian/Fedora)

This short tutorial will demonstrate how to test the connection to a PostgreSQL database locally and remotely from Linux. This article is part of our series on getting started with PostgreSQL, head...

View Article
Browsing index pages (314 articles)


Latest Images