Trending November 2023 # How To Install The Latest Version Of Krita In Ubuntu # Suggested December 2023 # Top 14 Popular

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You’ve updated and upgraded your Ubuntu installation, but Krita remains in its pre-4.3 version. That’s because Ubuntu’s official repositories don’t offer the latest and greatest from Krita’s developers. Let’s see how to install the latest version of Krita on Ubuntu.

Via Snap

It’s a well-known fact that Ubuntu’s latest version prioritizes snap over apt. Although apt insists on installing a pre-4.3 version of Krita, the latest one is available through snap. Terminal fans can install it with:





Those who prefer the visual way of doing things can bring it on-board through Ubuntu’s Software Center. Start by running the software center app, then typing Krita’s name in the top search field.

Via AppImage

Krita’s developers also offer their much-beloved graphics application in AppImage format. It’s almost as easy to install and use as the snap version but requires you to go over a series of steps until you can use it. Plus, you will have to update it manually in the future. Still, this is probably the most familiar way of installing software for former Windows users.

When the process completes, open the folder containing the downloaded file in your file browser.

If you have difficulty executing it, you can make use of the traditional way to make it executable. Open a terminal and type the following command:

Via Apt

Krita’s latest version might be missing from Ubuntu’s official repositories, but you can still access it via the developer repository.

Start by adding the third-party repository to Ubuntu’s list:


add-apt-repository ppa:kritalime



Acknowledge any prompt which may appear. After you have done so, update Ubuntu’s software list with:


apt update

Finally, install it with a typical:





With the latest version of Krita installed in your computer, it is now time to sketch like a pro with Krita. If Krita is not to your liking, you can also check out some of the best image-editing software for Linux here.

Odysseas Kourafalos

OK’s real life started at around 10, when he got his first computer – a Commodore 128. Since then, he’s been melting keycaps by typing 24/7, trying to spread The Word Of Tech to anyone interested enough to listen. Or, rather, read.

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How To Install Sendmail On Ubuntu 22.04

How to install Sendmail on Ubuntu 22.04 and configure it for sending emails using a email server which routes or relays the mail delivery.

Sendmail is a opensource Mail Transfer Agent (MTA) which is used to route email using server or by using shell commands. You can also configure SMTP using Sendmail.

In this guide you are going to learn how to install and setup Sendmail on Ubuntu. Also you will setup SMTP and configure it with PHP.


Update Server Packages

SSH inside your server and update the packages to it’s latest version.

sudo apt update sudo apt upgrade Install Sendmail

Sendmail is available in the ubuntu repository, so you can directly install using apt install command.

sudo apt install sendmail Configure Hostname

Edit the /etc/hosts file and add your hostname.


sudo nano /etc/hosts

On the line starting with, add the hostname to the end as it looks below. This should be on a single line. localhost


Configure SMTP

Create new directory inside /etc/mail for SMTP configurations.

sudo mkdir /etc/mail/authinfo

Setup correct permissions.


sudo chmod -R 700 /etc/mail/authinfo

Create a new file for your SMTP authentication inside the newly created directory.

cd /etc/mail/authinfo sudo nano smtp-auth

Paste the following line and replace the email-address with your login email and password with your password.

AuthInfo: "U:root" "I:


" "P:



Hit CRTL + X followed by Y and ENTER to save and exit the file.

Create a hash database map for the above created authentication.

sudo makemap hash smtp-auth < smtp-auth Configure SMTP

Navigate to the sendmail configuration directory and edit the file.

cd /etc/mail sudo nano

Add the below configurations right after the MAILER _DEFINITIONS line.

Replace smtp-host with your SMTP hostname.

define(`SMART_HOST',`[smtp-host]')dnl define(`RELAY_MAILER_ARGS', `TCP $h 587')dnl define(`ESMTP_MAILER_ARGS', `TCP $h 587')dnl define(`confAUTH_OPTIONS', `A p')dnl TRUST_AUTH_MECH(`EXTERNAL DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl define(`confAUTH_MECHANISMS', `EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl FEATURE(`authinfo',`hash -o /etc/mail/authinfo/smtp-auth.db')dnl

The configuration should look like the same as the below screenshot.

Now save the file and exit the editor.

Rebuild Sendmail Configuration

Once the configuration is done you need to rebuild the Sendmail configuration using the make command.

cd /etc/mail make

Once the configuration is rebuilt you need to restart Sendmail

Restart Sendmail

Restart Sendmail using the following command.

sudo /etc/init.d/sendmail restart

Now you can send emails using SMTP.

Additional Configurations Configuration with PHP

To use Sendmail with PHP you need to ad sendmail path in your php.ini file.

sudo nano /etc/php/





To the bottom of the file add the following.

sendmail_path= /usr/sbin/sendmail -t -i

Restart Apache or PHP-FPM for the changes to take effect.

sudo service apache2 restart


sudo service php


1-fpm restart Sendmail SMTP Configuration without Auth

Incase if you have whitelisted your server IP for SMTP and you can send emails without authentication you can follow the below method.

You don’t need to create the smtp-auth file that we created above.

You can directly edit the file and make the following changes.

cd /etc/mail sudo nano

Add the below configurations to the last.

Replace smtp-host with your SMTP hostname.



')dnl define(`RELAY_MAILER', `esmtp')dnl define(`RELAY_MAILER_ARGS', `TCP $h 587')dnl

Save the file, rebuild configuration and restart Sendmail.

cd /etc/mail make sudo /etc/init.d/sendmail restart

Prepare yourself for a role working as an Information Technology Professional with Linux operating system


Now you have learned how to install and configure Sendmail to relay using SMTP on Ubuntu 22.04.

Upgrade Php Version To Php 7.4 On Ubuntu

Upgrade PHP version to PHP 7.4 on Ubuntu. You can upgrade your current PHP version to the latest release PHP 7.4 on your Ubuntu 18.04.

This upgrade is tested on virtual machine instance running Ubuntu 18.04 OS on Google Cloud Compute Engine. So the steps mentioned in this guide works on any cloud servers like AWS, DigitalOcean, Linode, Vultr or any VPS or Dedicated servers running Ubuntu 18.04.

Here is a brief guide to show you how to install and upgrade to PHP 7.4 on Ubuntu 18.04 LTS with Apache and PHP7.4-fpm with Nginx.

You can follow this guide to Upgrade to PHP 8

Add PPA for PHP 7.4

Add the ondrej/php which has PHP 7.4 package and other required PHP extensions.

Once you have added the PPA you can install PHP 7.4.


Install PHP 7.4 for Apache

Execute the following command to install PHP 7.4

sudo apt install php7.4 Install PHP 7.4 Extensions

Installing PHP extensions are simple with the following syntax.

sudo apt install php7.4-


Now, install some commonly used php-extensions with the following command.


sudo apt install php7.4-common php7.4-mysql php7.4-xml php7.4-xmlrpc php7.4-curl php7.4-gd php7.4-imagick php7.4-cli php7.4-dev php7.4-imap php7.4-mbstring php7.4-opcache php7.4-soap php7.4-zip php7.4-intl -y

After the installation has completed, you can confirm the installation using the following command

php -v Enable PHP 7.4 for Apache

Now you need to tell Apache to use the installed version of PHP 7.4 by disabling the old PHP module (below I have mentioned php7.0, you need to use your current php version used by Apache) and enabling the new PHP module using the following command.

sudo a2dismod php


sudo a2enmod php


Restart Apache for the changes to take effect.


sudo service apache2 restart Install PHP 7.4 FPM for Nginx

For Nginx you need to install FPM, execute the following command to install PHP 7.4 FPM

sudo apt install php7.4-fpm

Follow the same method above mentioned to install the extensions

After the installation has completed, confirm that PHP 7.4 FPM has installed correctly with this command

php-fpm7.4 -v Modify Nginx configuration to use PHP 7.4

For Nginx you need to update the PHP-FPM socket in your Nginx configration located inside the sites-available directory. This will be located inside the location block location ~ .php$

Edit your configuration…

sudo nano /etc/nginx/sites-available/


The line you need to modify will look like this…

fastcgi_pass unix:/run/php/php



You need to replace the old PHP version with the new version.

fastcgi_pass unix:/run/php/php



Test your configration.

sudo nginx -t

Save the file and exit the editor and restart Nginx for the changes to take effect.

sudo service nginx restart Configure PHP 7.4

Now we configure PHP for Web Applications by changing some values in php.ini file.

For PHP 7.4 with Apache the php.ini location will be in following directory.

sudo nano /etc/php/7.4/apache2/php.ini

For PHP 7.4 FPM with Nginx the php.ini location will be in following directory.

sudo nano /etc/php/7.4/fpm/php.ini

Hit F6 for search inside the editor and update the following values for better performance.

Once you have modified your PHP settings you need to restart your Apache for the changes to take effect.

Configure PHP 7.4 FPM Pools

PHP 7.4 FPM allows you to configure the user and group that the service will run under. You can modify these with these commands

Change the following lines by replacing the www-data with your username.

user =


group =


listen.owner =

username =


Hit CTRL+X and Y to save the configuration and check if the configuration is correct and restart PHP.

Restart PHP 7.4 FPM

Once you have updated your PHP FPM settings you need to restart it to apply the changes.

sudo php-fpm7.4 -t sudo service php7.4-fpm restart

Prepare yourself for a role working as an Information Technology Professional with Linux operating system


Now you have learned how to upgrade PHP to PHP 7.4 on Ubuntu 18.04.

Learn How To Use Stabilizer In Krita?

Introduction to Krita Stabilizer

Krita Stabilizer is the most important feature of this software, and by enabling this feature, we can provide smoothing to our brush stroke. There are some parameters also with this feature that are adjustable, and by adjusting them, we can make a variation in the smoothing quality of brush stroke. You have noticed many times that when you start to draw your raster artwork in Krita, you faced a smoothing problem in brush strokes. There is a couple of things for this issue, and you can short out these things by following some designing technique in this software.

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How to Use Stabilizer in Krita?

A stabilizer actually works as a smoothing agent for brush stroke. Now let me tell you why you need to smooth brush stroke and what happens when we do it?

Now go to the tool panel, which is on the left side of the working screen and select Freehand Brush Tool or press the B button of the keyboard as the shortcut key of it.

Choose your desired brush preset from here. I will take a basic brush preset to explain to you about the stabilizer feature.

Set size of the brush as 10 pixels from this Size option.

You can also set the size of the brush tip from Edit Brush presets dialog box. Just give your desired value in the Diameter option of the chosen brush.

Now draw a line with this brush.

And zoom it at 100%. You can see there is jazziness in this line, and it is not smooth. Due to this issue, your artwork may look blurry, which is not good for you.

Now the canvas size is very big. Draw a line with the same brush preset parameters, which we used last time in an 800 x 800 pixels document.

When you zoom in, you can see only 100% zoom; it is much smoother than the previous one. So I will suggest you take a bigger size of document for your artwork in Krita software. Document size below 1000 x 1000 pixels will act as a baby size for your artwork, and you will not get your desired result.

And draw a line you can see it is lots of jazziness in it.

For having more smoothness in line, we can do a couple of things, such as we can use smoothing settings in the brush. Here on the right side of the working screen, you will have the Tool options tab, and in this tab, we have Brush Smoothing options.

Let me tell you about these options one by one. First is will select a Basic option and draw a line next to the previous line, which I have drawn with the None option of Brush Smoothing.

One more time, draw a line, but this time select the Stabilizer option of this list, and you can find a difference between each option. With the Stabilizer option, you will have a smoother line than all of the options. Here when you select the stabilizer option, the mouse cursor will change into two circles; tip like that and out circle represents delay time during drawing with it.

Delay can be understood as controlling the speed of drawing any stroke that means when the value of delay is less, then the stabilizer will provide less stoppage in drawing any stroke, or if delay value is more, then there will be more stoppage during drawing and speed of drawing that stroke becomes slow. Due to slow speed, there will be good smoothness on any stroke.

For example, if I draw this curve with less value of delay, it will be less smooth.

And if I increased the delay value, then you can see it is smoother than the last one.


Now you can understand how important a Stabilizer is in Krita? You can use this feature of Krita to have a good quality of the result of your art work. It is easy to handle it because it offers adjustable parameters for dealing with our different requirements. I am sure it will be a very helpful feature to your art work in Krita.

Recommended Articles

This is a guide to Krita Stabilizer. Here we discuss How to use Stabilizer in Krita, and by enabling this feature, we can provide smoothing to our brush stroke. You may also have a look at the following articles to learn more –

How To Download And Install Linux (Ubuntu) On Windows Pc

Now that we know what Linux is, it is the time that to learn how we should install it on the computer and choose which Distribution we should use. Let us start by understanding what a Linux Distribution is.

In this tutorial, we will learn –

What is a Linux Distribution?

Well, now as you know that Linux is open-source, free to use kernel. It is used by programmers, organizations, profit and non-profit companies around the world to create Operating systems to suit their individual requirements.

To prevent hacking attempts, many organizations keep their Linux operating systems private.

Many others make their variations of Linux available publicly so the whole world can benefit at large.

These versions/ types /kinds of Linux operating system are called Distributions.

How many distributions are out there?

There are hundreds of Linux operating systems or Distributions available these days. Many of them are designed with a specific purpose in mind. For example, to run a web server or to run on network switches like routers, modems, etc.

The latest example of one of the most popular smartphone-based Linux Distribution is Android!

Many of these Distributions are built to offer excellent personal computing.

Here, are a few popular Linux Distributions (also called Linux Distro) –

Linux Distribution Name Description

Arch This Linux Distro is popular amongst Developers. It is an independently developed system. It is designed for users who go for a do-it-yourself approach.

CentOS It is one of the most used Linux Distribution for enterprise and web servers. It is a free enterprise class Operating system and is based heavily on Red Hat enterprise Distro.

Debian Debian is a stable and popular non-commercial Linux distribution. It is widely used as a desktop Linux Distro and is user-oriented. It strictly acts within the Linux protocols.

Fedora Another Linux kernel based Distro, Fedora is supported by the Fedora project, an endeavor by Red Hat. It is popular among desktop users. Its versions are known for their short life cycle.

Gentoo It is a source based Distribution which means that you need to configure the code on your system before you can install it. It is not for Linux beginners, but it is sure fun for experienced users.

LinuxMint It is one of the most popular Desktop Distributions available out there. It launched in 2006 and is now considered to be the fourth most used Operating system in the computing world.

OpenSUSE It is an easy to use and a good alternative to MS Windows. It can be easily set up and can also run on small computers with obsolete configurations.

RedHat enterprise Another popular enterprise based Linux Distribution is Red Hat chúng tôi has evolved from Red Hat Linux which was discontinued in 2004. It is a commercial Distro and very popular among its clientele.

Slackware Slackware is one of the oldest Linux kernel based OS’s. It is another easy desktop Distribution. It aims at being a ‘Unix like’ OS with minimal changes to its kernel.

Ubuntu This is the third most popular desktop operating system after Microsoft Windows and Apple Mac OS. It is based on the Debian Linux Distribution, and it is known as its desktop environment.

The Best Linux Distribution!

The term best is relative. Each Linux distribution is built for a specific purpose-built to meet the demands of its target users.

The desktop Distributions are available for free on their respective websites. You might want to try them one by one till you get to know which Distribution you like the most. Each one of them offers its own unique design applications, and security.

We will be using Ubuntu for our learning purpose as it’s easy for a beginner to understand.

Also Check:- UNIX / Linux Tutorial for Beginners: Learn Online in 7 days

How to Install Linux

Let’s look the below Linux installation guide which has various methods we can use to Download Linux(Ubuntu) and install it.

Installing Linux using USB stick

This is one of the easiest methods of installing Ubuntu or any distribution on your computer. Follow the steps to install Ubuntu from USB.

Download the .iso or the OS files on your computer from this link.

Download free software like Universal USB installer to make a bootable USB stick.

Select an Ubuntu Distribution form the dropdown to put on your USB

Select your Ubuntu iso file download in step 1.

Select the drive letter of USB to install Ubuntu and Press create button.

After everything has been installed and configured, a small window will appear Congratulations! You now have Ubuntu on a USB stick, bootable and ready to go.

Installing Linux using CD-ROM

Those who like the way a CD runs should try using this method.

(image source)

Step 2) Burn the files to a CD.

Step 3) Boot your computer from the optical drive and follow the instructions as they come.

Installing Linux using Virtual Machine

Virtual machine software like Oracle VM can install Linux on Windows in easy steps. Let us look at them.

Here the brief steps

PART A) Download and Install Virtual Box

Download Virtual box using this link

Depending on your processor and OS, select the appropriate package. In our case, we have selected Windows with AMD

Once the download is complete, Open setup file and follow the steps below:

The virtual box dashboard looks like this-

PART B) Download Ubuntu

Visit this link to download Ubuntu.

You can select 32/64-bit versions as per your choice.

PART C) Create a Machine in Virtual Box

The virtual hard disk is where the OS installation files and data/applications you create/install in this Ubuntu machine will reside

Step-8) Now you can see the machine name in left panel

So a Machine (PC) with 8GB Hardisk, 1GB RAM is ready.

PART D) How to Install Ubuntu

Step 2) Select the Folder Option

Step 3) Select the Ubuntu iso file

Step-5) You have an option to Run Ubuntu WITHOUT installing. In this tutorial will install Ubuntu

Step-11) Installation process starts. May take up to 30 minutes. Please wait until installation process completes.

Step-12) After finishing the installation, you will see Ubuntu Desktop.


An operating system based on the Linux kernel is called a Distribution or Distro

There are hundreds of Distributions available, some of which are designed to accomplish a sole purpose like running servers, act as network switches, etc.

Naming the best Linux Distribution is difficult as they are made for different.

Linux can be installed on your system via the below-mentioned methods:

USB stick

Live CD

Virtual Installation

Latest Trends In The Field Of Artificial Intelligence

Featuring Top Applications of Artificial Intelligence in 2023 and Ahead

To appraise the trends of Artificial Intelligence (AI) 2023, we have to recall that 2023 and 2023 saw a large number of platforms, applications, and devices that depend on

More Devices

As the hardware and skill expected to deploy AI become less expensive and progressively accessible, we will begin to see it utilized in an increasing number of tools, gadgets, and devices. In 2023 we’re already used to running applications that give us AI-fueled predictions on our PCs, phones and watches. As the following decade draws near and the expense of hardware and software keeps on falling, AI devices will progressively be embedded into our vehicles, household appliances, and workplace tools. Augmented by innovation, for example, augmented reality displays, and paradigms like the cloud and Internet of Things, this year we will see an ever increasing number of devices of each shape and size beginning to think and learn for themselves.  

Digital Marketing

Artificial intelligence for digital marketing takes into account uncommon change via social media. It forecasts all day, every day chatbots, analyzes data and patterns, oversees custom feeds to produce content, looks for content points, makes custom based personalized content and makes recommendations when required.  

Real-time Personalization

This trend is driven by the success of web giants like Amazon, Alibaba, and Google, and their capacity to provide personalized experiences and recommendations. Artificial intelligence permits suppliers of products and enterprises to rapidly and precisely project a 360-degree view on clients in real-time as they cooperate through online portals and mobile applications, rapidly figuring out how their predictions can accommodate our needs and wants with ever-increasing accuracy. Similarly, as pizza delivery companies like Dominos will realize when we are well on the way to want pizza, and ensure the “Order  Now” button is before us at the right time, each other industry will turn out solutions planned for offering personalized customer experiences at scale.  

Track Human Motion

The AI-based Deep Learning innovation detects signs of the perplexing five finger movements in real-time. The sensor fix is joined to the client’s wrist. This single stranded electronic skin sensor tracks human development from a distance in real-time with a virtual 3D hand that reflects the original movement.  

AI will Recognize Humans

Maybe considerably more unsettlingly, the rollout of facial recognition technology is just prone to escalate as we move into the next decade. Not simply in China (where the government is taking a look at methods of making facial recognition obligatory for accessing services like communication networks and public transport) yet around the globe. Enterprises and governments are progressively putting resources into these techniques for telling what our identity is and deciphering our movement and behaviour. There’s some pushback against this – this year, San Francisco turned into the first significant city to boycott the utilization of facial recognition technology by the police and civil organizations, and others are probably going to follow in 2023. However, the topic of whether individuals will at last start to acknowledge this interruption into their lives, in return for the increased security and convenience it will bring, is probably going to be a hotly discussed subject of this year.  

Calculating Electrical Load

As the AI system is surmising, it can intensify the carbon impression. A variant range of data sets can be utilized from cell phone location information to estimate electrical load. This engineering can consider information from the geographical area and beat conventional forecasting methods by more than 2 times.  

AI in Movies, Video Games

A few things, even in 2023, are likely best left to people. Any individual who has seen the present state-of-the-art in AI-generated music, poetry or storytelling is probably going to concur that the most refined machines despite everything have some best approach until their output will be as charming to us as the best that humans can produce. Notwithstanding, the impact of AI on entertainment media is probably going to increase. This year we saw Robert De Niro de-aged before our eyes with the help of AI, in Martin Scorsese’s epic The Irishman, and the utilization of AI in making brand new visual effects and trickery is probably going to turn out to be progressively normal.

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