DEV Community: G Sudarshan

Unveiling the Common Traits of High-Performing Individuals Through Enneagram Types

G Sudarshan — Mon, 17 Feb 2025 14:26:56 +0000

In today’s fast-paced and competitive world, understanding what makes high-performing individuals excel in their fields is crucial. I conducted a study on a group of high achievers, analyzing their Enneagram types, wings, roles, and industries to uncover patterns and common traits. The Enneagram, a powerful personality framework, provides insights into motivations, fears, and behaviors, making it an excellent tool for this analysis. If you're curious about your Enneagram type, you can take the test here: Enneagram Test.

Here’s what I discovered:

The Dominance of Enneagram Type 9: The Peacemaker

The most common Enneagram type among high performers in this study was Type 9 (The Peacemaker). These individuals are often found in collaborative roles such as software engineering, where teamwork and communication are key. They thrive in environments that require adaptability and the ability to see multiple perspectives.

Key Traits: Adaptability, empathy, and a calm demeanor.
Why They Excel: Their ability to mediate conflicts and maintain a balanced work environment helps them thrive in team-oriented settings.

The Strategic Thinkers: Enneagram Type 5 (The Investigator)

The second most common type was Type 5 (The Investigator). These individuals are often found in technical and analytical roles such as data science and software engineering. They excel in environments that require deep expertise, problem-solving, and innovation.

Key Traits: Intellectual curiosity, independence, and a focus on mastery.
Why They Excel: Their ability to dive deep into complex problems and come up with innovative solutions makes them invaluable in technical roles.

The Achievers: Enneagram Type 3 (The Achiever)

Type 3 (The Achiever) was also well-represented, particularly in competitive industries like tech and finance. These individuals are often found in roles that require goal-setting, leadership, and high visibility. They thrive in fast-paced environments where results are paramount.

Key Traits: Drive for success, adaptability, and a focus on results.
Why They Excel: Their ability to set and achieve goals, coupled with their adaptability, makes them stand out in competitive industries.

The Helpers: Enneagram Type 2 (The Helper)

Type 2 (The Helper) was another prominent type, often found in roles that require collaboration, mentorship, and customer interaction. These individuals excel in environments where building strong relationships and fostering teamwork are essential.

Key Traits: Empathy, strong interpersonal skills, and a desire to support others.
Why They Excel: Their ability to build strong relationships and foster teamwork makes them essential in collaborative environments.

The Perfectionists: Enneagram Type 1 (The Reformer)

Type 1 (The Reformer) was also present, particularly in roles that require precision, quality control, and ethical standards. These individuals are often found in industries like finance and tech, where attention to detail and a strong work ethic are critical.

Key Traits: Attention to detail, strong work ethic, and a focus on improvement.
Why They Excel: Their commitment to high standards and continuous improvement ensures they deliver exceptional results.

The Loyalists: Enneagram Type 6 (The Loyalist)

Type 6 (The Loyalist) is known for their reliability, loyalty, and problem-solving skills. These individuals thrive in roles that require risk assessment, security, and teamwork, often found in industries like tech and finance.

Key Traits: Reliability, strategic thinking, and a focus on security.
Why They Excel: Their ability to anticipate challenges and create contingency plans makes them valuable in high-stakes environments.

Common Themes Across High Performers

Adaptability: Whether it’s Type 9s maintaining harmony or Type 3s adapting to achieve goals, adaptability is a recurring theme.
Collaboration: Types like 2 and 9 excel in teamwork, while Types 5 and 6 contribute through problem-solving and reliability.
Drive for Excellence: Types 1 and 3 are particularly focused on achieving high standards and measurable success.
Emotional Intelligence: Many high performers, especially Type 2s and 9s, demonstrate strong interpersonal skills and empathy.

Conclusion

High-performing individuals come from diverse Enneagram types, each bringing unique strengths to the table. However, common traits like adaptability, collaboration, and a drive for excellence unite them. Understanding these patterns can help organizations build stronger teams and foster environments where individuals can thrive.

Whether you’re a Peacemaker (Type 9), an Investigator (Type 5), or an Achiever (Type 3), recognizing your strengths and leveraging them can propel you to new heights in your career. The Enneagram is not just a tool for self-discovery but also a roadmap for unlocking your full potential.

What’s your Enneagram type, and how do you see it influencing your work? Share your thoughts in the comments below!

G Sudarshan Twitter | LinkedIn

Mastering Focus: 106 Insights for Effective Study Habits and Enhanced Concentration

G Sudarshan — Sat, 03 Feb 2024 14:23:02 +0000

These points are a compilation of my learnings from various sources, including Learning How to Learn, Ready, Study, Go!: Smart Ways to Learn, Secret of Concentration, and Deep Work: Rules for Focused Success in a Distracted World. This blog or links given are not monetized, and all credit goes to the original authors. I highly recommend readers to purchase these courses/books for further learning.

Healthy body is the first step. Good diet, exercise/yoga/meditation is necessary.
The mind is incredibly powerful at manifesting things you want, But it is also innocent and cannot differentiate between desire and fear or an aversion. And that's exactly why making intention clear is important so that you can tell clearly to mind, what to focus on. The mind latches on most powerful words - "fail" or "great" in this instance and manifest that for you. You should not have many intentions at the same time.
Anything that is claimed to be a "quick fix" most definitely is not.
Study for knowledge, not for marks. If you have knowledge, you will get the marks.
No subject can be boring or uninteresting. When you have thoroughly understood subjects, when you have grasped the fundamentals and are confident about your knowledge of it, then education has truly happened.
If you are only studying for great marks, you may possibly get a head start in life, but the people who truly understand their subjects will overtake you.
You will need to memorize a lot of information, There is nothing wrong with that as long as you understand what you are memorizing.
If we decide to like a subject, it grows on us. What you like and not like is your decision, and you can change it anytime. Take responsibility for what's happening in your mind and in your life. Only you can fix it.
20-30 minutes of completely uninterrupted focused work can do wonders. Pomodoro Technique
As you build up knowledge about subject and start to understand even just a little bit of it, you gain confidence and can work even longer.
Taking responsibility for your actions and inaction helps you dramatically increase chances of success in your life.
Consciously choose to like the subject.
Teaching friends is unbeatable.
Whenever you listen, see, talk, read, write, feel, taste or practice something, fibers called dendrites grow out of the neurons. New dendrites take time to grow. Practice makes connection stronger and stronger.
70% of anything new is forgotten within 24 hours if it is practiced right away. Practice is not simply reading and writing again and again. Test your knowledge. Apply it.
Be careful of bad habits like watching too much TV for example can cause too many of those dendrites to grow, giving your brain the wrong signal that this is very important to you.
We remember 95% of what we teach to someone else.
Learning is just a matter of growing dendrites and strengthening connections between them. Practice what you learned within 24 hours, A few times again in a week. Don't fool in thinking that you know the material - practice, discuss and teach.
Draw mind maps on whiteboard or paper. Read this to know more 6 C's of mind mapping c1: Central Idea c2: conciseness c3: craziness c4: curves c5: colors c6: cartoons
Good news needs to be flow around, downwards and upwards. If you have bad news, share it only with your superiors or with people who can do something about it.
When faced with a task, come up with ideas how to accomplish it. Don't waste time giving reasons about why it cannot be done. Accept that it has to happen and figure out ways of making it happen.
"With" - This single word can make such a huge difference in the way leader leads the team. One leader says he has a team working under him. Another says he has a team working with him.
Authority equation Authority to be shown = criticality of project / Experience of the team
Tremendous satisfaction comes from a job well done.
Take full responsibility if the team fails and pass on the credit to them if they succeed. Turning problem into opportunity is the leader's job.
Fair compensation, instilling a sense of purpose, giving opportunities for mastery, granting autonomy and generating feeling of safety are cornerstones of secrets of creating and leading great teams.
It's not about what's being said, it's all about who is saying it.
The most authentic thing about us - human beings, is our capacity to love =, to laugh, to create, to overcome, to endure, to transform and to be greater than whatever challenges life throws at us.
Pain is inevitable, suffering is optional.
Udyoginam Purushsimha upeyati Laxmi. - Laxmi (wealth and success) comes to the one who is willing to work dilligently and has the courage of a lion. Believe that you have this courage and work hard. Keep your eyes wide open, When opportunity knocks open the door.
Intention, Attention, Manifestation
You only have control over your actions, never results of those actions.
Karmanye vadhikaraste Ma Phaleshu Kadachana,
Ma Karmaphalaheturbhurma Te Sangostvakarmani
By Lord Krishna, Bhagavad Gita, Chapter 2, Verse: 47
Your reason behind study/work should be strong. The "Why" should be strong enough to sustain you in long term in same work that you don't need any external motivation for it.
Intention, attention on action, non-attachment to results, ability to wait and a strong reason results in manifestation.
Don't ever spend more than you earn.
One of the biggest secret to secret of attracting wealth is donating a part of it to charity.
The ability to give is the signature of being rich.
Be in the company of people who respect wealth.
Never ever use derogatory words like filthy, stinking, obscene etc. to describe prosperity.
Rich people invest, others save.
Don't get caught up in anything that promises quick money. It simply doesn't exist.
Abundance begets abundance.
Gratitude for all that you have and forbearance to wait and work for all that you want will make you very, very rich indeed.
Once you have acquired the knowledge, it will always be yours.
Practice brings perfection. Learning and repeating something 20 times a say is useless, but repeating and revising it once a day for 10 days makes great foundation.
46.Whenever we try to learn something neural connections are made which further gives rise to new ones.
If you felt lecture is getting boring ask a question, you will be conscious about lecture. Active learning is far better than passive learning. Learning by doing.
Exercise gives rise/birth to new neurons. Hence physical workout is important.
Success isn't come to smart people, there are many smart people who are not successful, but there are lots of people very, very passionate and persistent of really staying the course, studying, working on it and not letting go, Not giving up.
There are two thinking mode - focused thinking mode and diffused thinking mode.
Procrastination is the root of all evil.
Focus, Practice, repetition
Chunks are literally chunks of information in our brain. Chunks can be made by practicing consciously again and again. First step to form chunk is giving full attention towards information.
Only doing it yourself helps create that underlie true mastery.
Recalling is far better than rereading
Rereading is illusion of competence (studying) in case are feeling doing it easier than recalling.
Recalling material when you are outside your usual place can also help to strengthen it.
Write on paper to as you have to teach it to someone else.
Chunking is related to habbit. the clue - The routine - The reward - The habbit
Minimize distractions while studying.
Write weekly and daily journal planner.
Try to work on most disliked and most important task first.
Arrange your work in small challenges and make sure you get the reward.
Studying before sleep is very useful.
Associate study that should be memorized with interesting things.
Visual representation is great in memorization.
Practice problem-solving.
For memorization group and simplify your content in memory.
Memory palace technique
Metaphors are useful in memorization.
People learn by trying to make sense out of the information they perceive.
Taking responsibility for your own learning is one of the most important things you can do.
You must not fool yourself. You are easiest person to be fooled by you.
Testing is itself an extraordinary powerful learning experience.
Test preparation checklist
Did you make serious effort to understand the text?
Did you work with classmates on homework problems?
Did you attempt to outline every homework problem solution?
Did you participate actively in homework group discussions?
Did you understand all of your homework problem solution? (when they are handed to you)
Did you ask in class for explanation of homework problem solution that weren't clear to you?
If you had a study guide, did you carefully go through if before the test and convince yourself that you could do everything on it?
Did you attempt to outline lots of problem solution quickly?
Did you go over study guide and problems with classmates and quiz one another
If there was a review session before the test, did you attend it and ask questions about anything you weren't sure about?
Did you get the reasonable night's sleep before the test?
Practice makes permanent.
You have not truly learned something unless you can teach it to others.
Passions can broaden, change and grow.
Consistency and hardwork leads to concentration.
Human mind is a combination of monkey's jumps from here to there and elephant's power. The one who can control both monkey and elephant can control the mind.
Once you sit for study be stable, give atleast 1 hour to a subject at a time. Tell others to not to disturb you at the time of study.
To be aware at mind level -
Avoid food which tends to sleep.
Be clean, keep clothes and room neat and clean.
have determination.
chitchatting and unnecessary talking should be completely avoided.
Eat dry fruits.
If you have faith in something pray him/her honestly.
Faith leads to confidence.
Don't doubt your own ability of learning.
One more key to concentration is love, mind always resides on what it loves. student need to develop love for study.
In begining student needs to put efforts to like study, afterwards when subject is clear to you , being undertood by you, your interest in studies also grow automatically.
Faith and love brings concentration effortlessly without any conflict.
If you don't understand a word, find it's meaning. This is silly thing but many a times people go on reading just for sake of reading wihtout properly understanding.
However genius you are, nothing is achieved without enough hardwork and try.
Nothing is impossible for a human with persistence and who is stick to his aim.
Non-attachment should be practised to achieve your aim all other attractions (or actually "distractions") should be avoided. you should not think about anything else rather than your current work.
Once you have develop a little interest and concentration you should increase speed and hardwork.
True sign of concentration is you forgot other things while studying even thirst and hunger too.
Deep Work: Professional activities performed in a state of distraction free concentration that push your cognitive capabilities to their limit. These efforts create new value, improve your skill and are hard to replicate.
Shallow Work: Non cognitive demanding, logistical-style tasks, often performed while distracted. These efforts tend to not create much value in the world and are easy to replicate
Two core abilities for thriving in new economy are
first is the ability to quckly master hard things and second is the ability to produce at eleite level in terms of both quality and speed
Deep work helps you quickly learn hard things and deep work helps you to produce at elite level.
Beatiful code is short and concise, so if you were to give that code to another programmer, they would say, "oh, that's well written code. It's much like as if you were writing a poem"
Embrace boredom.
Don't take breaks from distraction, Instead take breaks from focus.

How Install MySQL and Workbench on Windows

G Sudarshan — Wed, 04 May 2022 13:49:12 +0000

Step 1

Go to https://dev.mysql.com/downloads/installer/ and download Windows (x86, 32-bit), MSI Installer [ 422 MB size ]

🚀 On next page website will ask to login just click on "No Thanks, Just Start my download"

Step 2

Execute the downloaded file.

You will be asked to choose a setup

Select Developer Setup, click on next

then some things like Extension for VSCode or if Python is not installed on your PC installer will ask you to download and install it manually but you can ignore that as they are not essential ( unless you are going to use python itself for development )

Step 3

The Installation

All products to be installed will be listed

click on execute to install all of them

click on next

Step 4

Product Configuration

click on next

ports will be available to configure in most of the cases leave it as it is, But if you need to change ports due to clashes between different services with same you probably understand what you are doing so I don't need to elaborate that here.

If you don't know what to do or feeling confused just click on next

here too click on next

Step 5

Set password for root user

you can also add other users here but if you are installing it first time you probably using it for learning purpose hence you don't need it, don't worry you can create users later too.

Click on Next

Again click on Next

Click on Execute [ this will take time to apply configuration ]

Click on Finish

Again click on Next ( It will ask for configuration again ignore and click on Next )

click on Finish

Click on next till following window appears

Enter Password you created in previous steps and click on Check

Click on Next

Click on Execute

Click on Finish

On next window it will ask for configuration again just click on next

Click on Finish

You have successfully installed MySQL and MySQL workbench on windows.

Step 6

To verify successful installation

open MySQL Workbench

click on Local instance

Enter password created during setup

Enter query " show databases; " and click on lightning symbol to execute it

If you get this output like this, Yes you have installed MySQL and MySQL workbench completely!

Happy Programming!

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Git and GitHub 101

G Sudarshan — Tue, 03 May 2022 11:12:34 +0000

Git is the open source distributed version control system that facilitates GitHub activities on your laptop or desktop. This blog post summarizes commonly used Git command line instructions for quick reference.

Install

Git for All Platforms
http://git-scm.com
Git distributions for Linux and POSIX systems are also available on the official Git SCM web site

Configure tooling ( you have to configure this only one time after installation )

Configure user information for all local repositories

$ git config --global user.name "[name]"
Sets the name you want attached to your commit transactions

$ git config --global user.email "[email address]"
Sets the email you want attached to your commit transactions

$ git config --global color.ui auto
Enables helpful colorization of command line output ( you can skip this if you want )

Create repositories

When starting out with a new repository, you only need to do it once; either locally, then push to GitHub, or by cloning an existing repository.

$ git init
Turn an existing directory into a git repository

$ git clone [url]
Clone (download) a repository that already exists on
GitHub, including all of the files, branches, and commits.

connecting Git and GitHub via SSH

This is one of the most important things to set-up git and GitHub. I'll recommend you to follow these two pages of official GitHub documentation to genarate and add SSH keys.
✅ Generating a new SSH key and adding it to the ssh-agent
✅ Adding a new SSH key to your GitHub account

Synchronize changes ( Most frequently used part )

Synchronize your local repository with the remote repository
on GitHub.com

$ git add [file]
To add file to stage. Mostly you will be using git add . to add all file at once

$ git commit -m "commit message"
All the file changes that are on the stage will be commited ( saved ) in local git repo after this command.

$ git status
To check current status of repository.

Adding a remote repository

To add a new remote, use the git remote add command on the terminal, in the directory your repository is stored at.

The git remote add command takes two arguments:

A remote name, for example, origin
A remote URL, for example, https://github.com/user/repo.git

$ git remote add origin https://github.com/user/repo.git
# Set a new remote

$ git remote -v
# Verify new remote
> origin  https://github.com/user/repo.git (fetch)
> origin  https://github.com/user/repo.git (push)

Remote repository synchronization

to push the changes to remote repo for first time use the following command
$ git push [remote] [branch] -u
✓ Remember -u is used only when pushing for first time later on you can simple use
$ git push [remote] [branch]
Uploads all local branch commits to GitHub

$ git fetch [remote] [branch]
Downloads all history from the remote tracking branches

$ git merge
Combines remote tracking branch into current local branch

$ git pull [remote] [branch]
Updates your current local working branch with all new
commits from the corresponding remote branch on GitHub.
git pull is a combination of git fetch and git merge

The .gitignore file

Sometimes it may be a good idea to exclude files from being
tracked with Git. This is typically done in a special file named .gitignore . You can find helpful templates for .gitignore files at github.com/github/gitignore.

Branches

Branches are an important part of working with Git. Any
commits you make will be made on the branch you're currently
“checked out” to. Use git status to see which branch that is.

$ git branch [branch-name]
Creates a new branch

$ git checkout [branch-name]
Switches to the specified branch and updates the
working directory

$ git merge [branch]
Combines the specified branch’s history into the current branch. This is usually done in pull requests, but is an important Git operation.

$ git branch -d [branch-name]
Deletes the specified branch

Glossary

git: an open source, distributed version-control system
GitHub: a platform for hosting and collaborating on Git repositories
commit: a Git object, a snapshot of your entire repository compressed into a SHA
branch: a lightweight movable pointer to a commit
clone: a local version of a repository, including all commits and branches
remote: a common repository on GitHub that all team member use to exchange their changes
fork: a copy of a repository on GitHub owned by a different user
pull request: a place to compare and discuss the differences introduced on a branch with reviews, comments, integrated
tests, and more
HEAD: representing your current working directory, the HEAD pointer can be moved to different branches, tags, or commits
when using git checkout

Learning Resources

Thank You!

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How To Install Node.js and NPM on Ubuntu 20.04

G Sudarshan — Sat, 02 Apr 2022 11:18:06 +0000

Run following commands on terminal

sudo apt update

sudo apt install nodejs

To check which version of node is installed on machine type following command

node -v

To install NPM (Node Package Manager) run following command on terminal

sudo apt install npm

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Barclays Internship Interview Experience

G Sudarshan — Tue, 30 Nov 2021 06:59:54 +0000

Barclays visited my college for summer internship ( BA3 intern role ) in third week of November 2021.

Round 1(Online Test):
First there was a MCQ+coding round. In which there were 30 MCQ questions. MCQs were focused on Java and servlets. MCQs were based on following topics.

Java
C++
Python
Servlet
SQL
MongoDB
OOP

Then there were 2 DSA questions. I would say leetcode medium level. Test was conducted on Hackerearth. Unlike other companies visited before, Barclays MCQ has a very good weightage.

46 people were shortlisted after this round.
Then there was a Technical+HR interview.

Round 2(Interview): My interview was on 19th November, Time: around 45 min.

Interviewer was a friendly person. Interview was held online on Cisco Webex. In Barclays interviewer is generally one of their VPs.

following questions were asked to me

Tell about yourself in brief
Tell me about hackathon you won and that project
Tell me about any of your team project
Explain that project further
How you maintained security of project?
Few counter questions on project

Then he turned to behavioural questions

Tell me about situation when you were instructed to strictly follow the rules
Tell me about situation when you have difference of opinion with colleague
Tell me about your mistake from which you learnt
How you build connections with people, How do you feel while talking to a stranger for first time?
Have you done any extra work beyond what is expected to be done?
Do you have any questions for me? ( I did asked 2 questions here to him, for which I had already researched about the company on internet )

after this interview 13 people were selected. I was one of them:)

My tips:

Practice DSA questions on gfg and leetcode
After a point you get stuck in DSA, mostly after arrays and strings ( Dw, happens with everyone and with me too ). So I started learning from this great playlist on DP by Aditya Verma . also I used to search topic wise videos on Youtube and watch one with most views or likes. You can also watch this MIT Introduction to Algorithms Playlist to form understanding. However practicing on leetcode and gfg is also equally important as learning new topics( or actually slightly more important I would say ).
I asked seniors who have been placed or have done internship in that specific company. They were really helpful. My other friends who were selected as summer interns at Credit Suisse, Deutsche bank and UBS also guided me very well about interview process.
You can try a mock interview with one of your friend that also works great.
Know your projects well so if interview went in that direction you can speak about your project and explain it.
Have strong CS fundamentals. DSA, OOP, DBMS ( important for banks and fintech ), CN, OS. Though in my interview I was not asked anything on CS fundamentals. It depends on interviewer. Check out InterviewPrepResources and PlacementPrepGuide for Quick revision. Also Javatpoint is a blessing to CSE students to learn topics in short amount of time for interview prep. Just search topic name and javatpoint on google.
It is important to talk and have a human conversation with interviewer. They are friendly to candidates. And have confidence that you are a good candidate. If you yourself believe in your abilities then you will prove it to interviewer very well.
For Barclays read their RISES values. These are mentioned on their website.
Be thorough with your resume.
Read geeksforgeeks archive related to the company.
Be confident in an interview.
Here you have to sell yourself so don't be shy to talk about your good work and achievements. I think it would be a plus if you could show them one of their values in your behavioural Question-Answers ( Not mandatory but good to have if it comes spontaneously ).
It is important to ask a good question at the end to the interviewer. That shows your interest in company.
Be prepared for “tell me about yourself” as first impression matters.
Last but one of the most important tip would be, have patience, before Barclays I didn't cleared first round (Coding round) of 3-4 companies in a row but I still had confidence in myself and that is why I think I could explain it well to interviewer. So have confidence. I know this can be hectic period for you, but focus on preparing rather than worrying coz worrying does not make any difference but working does. I too tried to do that. Give your 100%.

All The Best!

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Github to Whatsapp Push Notifier using GitHub Actions

G Sudarshan — Fri, 19 Nov 2021 12:40:20 +0000

Github to Whatsapp Push Notifier

Link to GitHub repo: Github to Whatsapp Push Notifier

The whatsapp bot built using Twilio APIs which sends a Whatsapp message when code is pushed to a repository.

Whatsapp Push Notify Action 🚀

Usage

Create account in twilio here.
From your twilio dashboard fetch Account Sid and Auth Token.
To encrypt them, create new secrets in your repository named account_sid, auth_token, to_whatsapp_no and give it's value.
Create a .github/workflows/whatsapp-push-notify-action.yml.
Add the following properties to whatsapp-push-notify-action.yml file

name: When a push occurs in the master branch, a private message is sent on the Whatsapp.
on:
  push:
    branches: 
      - main
jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v1
      - name: install twilio
        run: pip install twilio
      - name: run code
        run: python main.py
        env:
          account_sid: ${{ secrets.ACCOUNT_SID }}
          auth_token: ${{ secrets.AUTH_TOKEN }}
          to_whatsapp_no: ${{ secrets.TO_WHATSAPP_NO }}
          from_whatsapp_no: ${{ secrets.FROM_WHATSAPP_NO }}

Whatsapp Push Notifier Output

This project is MIT licensed.

Submission Category:

Maintainer Must-Haves, DIY Deployments, Phone Friendly, or Wacky Wildcards

Additional Resources / Info

I have used Twilio's Whatsapp APIs for this project

Link to GitHub repo: Github to Whatsapp Push Notifier

Installing Java on Ubuntu 20.04 [ Easy Way ]

G Sudarshan — Tue, 07 Sep 2021 14:34:39 +0000

In this guide, we will describe how to install Java on Ubuntu 20.04.

Installing OpenJDK 11

Open Terminal, As always first check for updates

sudo apt-get update

Then type following command in terminal

sudo apt install openjdk-11-jdk

when asked for [ Y/n ], Type Y

Once the installation is complete, you can verify it by checking the Java version:

java -version

The output should look something like this:

openjdk version "11.0.7" 2020-04-14
OpenJDK Runtime Environment (build 11.0.7+10-post-Ubuntu-3ubuntu1)
OpenJDK 64-Bit Server VM (build 11.0.7+10-post-Ubuntu-3ubuntu1, mixed mode, sharing)

`JAVA_HOME` Environment Variable

The JAVA_HOME environment variable is used by some Java applications to determine the Java installation location.

To set the JAVA_HOME variable, first find the Java installation path with update-alternatives:

sudo update-alternatives --config java

In this example, the installation paths are as follows:

OpenJDK 11 is located at /usr/lib/jvm/java-11-openjdk-amd64/bin/java

Once you found the path of your preferred Java installation, open the /etc/environment file:

sudo nano /etc/environment

Assuming you want to set JAVA_HOME to point to OpenJDK 11, add the following line, at the end of the file:

/etc/environment

JAVA_HOME="/usr/lib/jvm/java-11-openjdk-amd64"
Copy

For changes to take effect on your current shell you can either log out and log in or run the following [source](https://linuxize.com/post/bash-source-command/) command:

source /etc/environment

Verify that the JAVA_HOME environment variable was correctly set:

echo $JAVA_HOME

You should see the path to the Java installation:

That’s it! At this point, you have successfully installed Java on your Ubuntu system!

Now for complete assurance

Open any text editor type following following code

class Simple{  
        public static void main(String args[]){  
         System.out.println("Hello Java");  
        }  
    }

save this code as Simple.java

cd to the folder where the program is saved.

then compile using following command in terminal. ( remember S is capital in Simple )

javac Simple.java

and then run using following command

java Simple

If you are able to see this output ..... then your java is successfully installed on Ubuntu!

Hello Java

Uninstalling Java

You can uninstall Java like any other package installed with apt .

For example, to uninstall the default-jdk package enter:

sudo apt remove openjdk-11-jdk

Conclusion

OpenJDK 11 and OpenJDK 8 are available in the default Ubuntu 20.04 repositories and can be installed using the apt package manager.

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CPP Wiki: All you need to quick revise c++

G Sudarshan — Tue, 07 Sep 2021 14:29:57 +0000

CPP wiki

Several of the basic types can be modified using one or more of these type modifiers −

signed
unsigned
short
long

The following table shows the variable type, how much memory it takes to store the value in memory, and what is maximum and minimum value which can be stored in such type of variables.

Default return type of all cpp functions is int
Without return 0 statement in main a warning will be produced
Data type representation is machine specific in cpp
Void can be used to declare generic pointers
If we use vinay modifier alone it defaults to int

Lvalues and Rvalues

There are two kinds of expressions in C++ −

lvalue − Expressions that refer to a memory location is called "lvalue" expression. An lvalue may appear as either the left-hand or right-hand side of an assignment.
rvalue − The term rvalue refers to a data value that is stored at some address in memory. An rvalue is an expression that cannot have a value assigned to it which means an rvalue may appear on the right- but not left-hand side of an assignment.

Variables are lvalues and so may appear on the left-hand side of an
assignment. Numeric literals are rvalues and so may not be assigned and
can not appear on the left-hand side. Following is a valid statement −

Initializing Local and Global Variables

When a local variable is defined, it is not initialized by the
system, you must initialize it yourself. Global variables are
initialized automatically by the system when you define them as follows −

It is a good programming practice to initialize variables properly, otherwise sometimes program would produce unexpected result.

A program can have same name for local and global variables but value of local variable inside a function will take preference.

A reference variable must be initialised at the time of declaration

:: varname ( scope resolution operator here used to print global variable varname )

Explicit use of return 0 statement will indicate program was successfully executed
An inline function is a function that is expanded inline when invoked
Only trailing arguments can have default values
An argument to a function can be declared as const

int strlen( const char *p )
int length( const string &s )

Following are other examples of various types of Integer literals −

85         // decimal
0213       // octal
0x4b       // hexadecimal
30         // int
30u        // unsigned int
30l        // long
30ul       // unsigned long

Boolean Literals

There are two Boolean literals and they are part of standard C++ keywords −

A value of true representing true.
A value of false representing false.

You should not consider the value of true equal to 1 and value of false equal to 0.

Character Literals

Character literals are enclosed in single quotes. If the literal
begins with L (uppercase only), it is a wide character literal (e.g.,
L'x') and should be stored in wchar_t type of variable . Otherwise, it is a narrow character literal (e.g., 'x') and can be stored in a simple variable of char type.

A character literal can be a plain character (e.g., 'x'), an escape
sequence (e.g., '\t'), or a universal character (e.g., '\u02C0').

There are certain characters in C++ when they are preceded by a
backslash they will have special meaning and they are used to represent
like newline (\n) or tab (\t). Here, you have a list of some of such
escape sequence codes −

There are two simple ways in C++ to define constants −

Using #define preprocessor.
Using const keyword.

Note that it is a good programming practice to define constants in CAPITALS

The data type modifiers are listed here −

signed
unsigned
long
short

The modifiers signed, unsigned, long, and short can be applied to integer base types. In addition, signed and unsigned can be applied to char, and long can be applied to double.

Type Qualifiers in C++

The type qualifiers provide additional information about the variables they precede.

const

Objects of type const cannot be changed by your program during execution

volatile

The modifier volatile tells the compiler that a variable's value may be changed in ways not explicitly specified by the program.

restrict

A pointer qualified by restrict is initially the only means by
which the object it points to can be accessed. Only C99 adds a new type
qualifier called restrict.

an object created inside a block using new, will remain in existence until explicitly destroyed using delete

the first dimension of array may be variable whose value is supplied at runtime . All others must be constants

like any other operator new and delete can be overloaded

Explicit use of return 0 statement will indicate program was successfully executed
An inline function is a function that is expanded inline when it is invoked
only trailing arguements can have default values
an argument to a function can be declared as const

int strlen( const char *p )
int length( const string &s )

By default members of classes are private
objects can be defined by placing their name immediately after closing brace

class Test{
//code here
} t1, t2, t3;

Unlike many other programming languages cpp put semicolon after class definition

class Item{
//code here
};

Outside class definition of member function
syntax

return-type class-name :: function-name (argument declaration )
{
    //function body
}

A member function can call another member fnction directly without using dot operator
when a function is defined inside a class, it is treated as an inline function. Therefore, all the restrictions and limitations that apply to an inline function are also applicable here.
normally only small functions are defined inside class definition
It is normal practice to place all data items in private section and all the functions in public
separate memory is allocated for member variables bit no separate memory is allocated for member functions

static data members

It is initialized to zero when the first object of its class is created.
only one copy of that member is created for entire class and is shared by all the objects of that class, no matter how many objects are created
It is visible only within class but its lifetime is entire program
static variables are normally used to maintain values common to entire class
Static variables are also known as class variables

int Item :: count // definition

Note that type and scope of each static members variable must be defined outside the class definition

Static member functions

A static function can have access to only other static member ( functions or variables ) declared in the same class
A static member function can be called using class name ( instead of its objects ) as follows

class-name :: function-name

Friend function

To make an outside function friendly to a class, we have to simply declare this function as a friend of the class as shown below

class ABC{
public:
friend void fun1();
};

usually it has objects as arguements
It can be declared in private or public part
member functions of one class can be friend functions of another class. In such cases, they are defined using scope resolution operator as below

class A{
friend int B :: fun1();
}

We can also declare all the member functions of one class as the friend functions of another class. In such cases class is called as friend class.

class A{
friend class B;
}

const member functions

If a member function does not alter any data in the class, then we may declare it as a const member function as follows

void mul(int, int) const;
double get_balance() const;

The qualifier const is appended to the function prototypes ( in both declaration and definition ) The compiler will generate an error message if such function tries to alter data.

Pointer to member

int A ::* ip = &A :: m;

cout << a.*ip; // display value of m
cout << a.m;  // display value of m

ap = &a // pointer to object
cout << ap->*ip; // display value of m
cout << ap->m;  // display value of m

pointer to member functions

(object.*pointer-to-function) (10);

(pointer-to-object→*pointer-to-function) (10);

Constructor

constructor enables an object to initialize when it is created.
destructor destroys the object when they are required
constructor should be declared in public section, they do not have return type
the derived class can call base class constructor
construcor cannot be virtual
An object with constructor cannot be used as member function
constructor can accept ta refrenece to its own class as a parameter

class A{
public: 
 A(A &a){}
};

constructor overloading is allowed in c++

Constant Objects

We may create and use constant objects using const keyword before object declaration

const matrix m(a, b); //object m is constant

Any attempt to modify value of a and b will generate compile time error
constant object can call only constant member functions

Destructor

Synatx: ~class-name(){ }

A destructor nevevr takes any argument nor does it return any value
The primary use of destuctor is freeing up the memory in freeing up th memory reserved by the object before it gets destroyed.

Operator overloading

operators that cannot be overloaded

class member access operators ( . and .*)
scope resolution operator ( :: )
size operator ( sizeof )
conditional operator ( ? : )

syntax:


return-type class-name :: operator op ( argument )

{

  [// f](//f)unctionbody

}

Operator functions must bee either friend functions or member functions
Declare the operator function operator op() in the public part of class

Only existing operators can be overloaded. New operators cannot be created
Friend functions cannot used to overload certain operators. However member functions can be used to overload them.

= () [] →

Type Conversion

The constructors used for the type conversion take a single argument whose type is to be converted.

class to basic type

vector :: operator double()
{
    double sum = 0;
    return sqrt(sum);
}

..
..

vector v1;
double length = v1;

Casting operator function should be

It must be a class member
It must not specify a return type
It must not have any argument

One class to another class type

Such conversion between objects of different classes can be carried out by either a constructor or a conversion function.

In case of conversion function , conversion takes takes place in source class and object is returned to destination class.

In case of constructor, conversion take place in destination class.

Abastract class

an abstract class s a class that is not used to create objects
An abstract class is only used as base class
A class can only be considered as abstract class if it has at least one pure virtual function

If any base class contains a constructor with one or more arguments, then it is mandatory for derived class to have a constructor and pass the arguments to the base class constructors

A class can contain objects of other classes as its members. This kind ofrelationship is called containership or nesting

Declaring Pointer

Syntax: data-type *pointer-var
We can locate asterisk ( * ) immediately before the pointer variable, or between the data-type and the pointer variable, or immediately after the data type. It dos not cause any effect in the execution process.

int *ptr, a;
ptr = &a;

Pointer to pointer

int a, *p1, **p2;
p1 = &a;
p2 = &p1;

We can also use void pointers, known as generic pointers, which refer to variables of any data type before using void pointers we must cast the variable to the specific data types that they point to.
Pointers which are not initialized in a program, are called Null pointers. Pointers of any data typecan be assigned with one value i.e. '0' called null address
Indirection operator *
attempt to dereferenced an unnitialized pointer, will cause runtime error by referring to any other location in memory
we cannot perform pointer arithmetic on variabes which are not stored in contigous memory location
There is no error checking of array bounds in c++. Suppose we declare array of size 25. The compiler issues no warnings if we attempt to access 26th location. It is programmer's task to check the limits.

Array of pointers

int *inarray[10];

Char array of pointers

char *ptr[10] = { "books", "television", "computer", "sports" };

char str[25];

A string ends with the null character '\0' in c++

Pointers to functions

Syntax: data-type (*fun1)();

Pointers to objects

item x;
item *p = &x;

x.show();
p->show();
(*ptr).show();

item *ptr = new item;

The pointer this acts as an implicit argument to all the member functions.

return *this; //returns object it points to

Pointers to objects of base class are type-compatible with pointers to objects of a derived class
Runtime polymorphism is achieved only when a virtual function is accessed through a pointer to base class
We cannot have virtual constructors but we can have a virtual destructor

Pure virtual function

also know as Do nothing functions

virtual void display() = 0; // Pure virtual function

Class containing pure virtual functions cannot be used to declare any objects of its own. Such classes are called abstract base classes.

I/O Operations

A stream is a sequence of bytes.
The source stream that provides data to the program is called the input stream and the destination stream that receives output from the program is called the output stream.
A program extracts the bytes from an input stream and inserts bytes into an output stream
A stream acts as interface between the program and the I/O devices used
cin and cout are predefined objects in iostream

char c;
cin.get(c); // get char from keyboard
c = cin.get(); // same

cout.put('x');
cout = put(ch); // ch is variable
cout.put(68); // displays 'D' ( ASCII Value conversion )

The getline() function reads a whole line of text that ends with newline character

syntax: cin.getline(linr, size)

char name[20];
cin.getline(name, 20);

cin can read strings that do not contain white spaces

cout.write(line, size);

It is possible to concatenate two strings using write() function.

cout.write(s1,m).write(s2, n);

ios format functions aios format functionsios format functionsios format functionsnd manipulators

ios format functions

To access the manipulators, the file iomanip should be included in the program

Manipulators

width()

cout.width();
cout.width(5);
cout<<543;
cout.width(5);
cout<<12<<"\n";

c++ never truncates the values

precision

By default the floating numbers are printed with six digits after the decimal point.

synatx: cout.precision(d);

cout.precision(3);
cout << 3.14153<<"\n"; // results in 3.142 ( rounded to nearest cent )
cout << 2.50032; //results in 2.5 ( no trailing zeros )

Precision setting stays in effect until it is reset
Default precision is 6 digits

fill()

The unused positions of the field are filled with white spaces by default.
We can use fill() to fill the unused position by any desired character

cout.fill(ch);

cout.fill('*');
cout.width(10);
cout << 5250 << "\n"; // results in ******5250

like precision fill() stays in effect till we change it

manipulators

cout << setw(10) << setiosflags(ios::left) << 12345;

cout << setw(5) << setprecision(2) << 1.2345 
     << setw(10) << setprecision(4)
     << sqrt(2)
     << endl;

own manipulator

ostream & unit( ostream & output)
{
    output << "inches";
    return output;
}

cout << 36 << unit; // results in 36 inches

File

infile.seekg(10); 
/* 
moves the file pointer to the byte no. 10 
Remember the byte in a file are numbered begin from  zero 
therefore the pointer will be pointing to 
the 11th byte in file  
*/

EOF flag is turned off using function clear()

Command line arguments

main() function can take two argument

main(int argc, char *argv[])

argc represents the no. of arguments
second argument argv (known as argument vector ) is an array of char type pointers that points to the command line arguments. The size of this array will be equal to the value of argc.

Templates

Templates allows us to create generic classes

template < class T >
class item{
    T varName;
    //use anonymous type T wherever appropriate
}

We can use more than one generic datatype in class template

template < class T1, class T2 >

template < class T1=int> // default data type specified as int

Like class template we can also define function template

Exception Handling

try{
    // try block
    throw exception;
}catch( type arg )
{
    // catch block
}

catch(...)
{
    // catch all exceptions
}

When an exception is rethrown it will be caught by anappropriate catch in the outer try/catch sequence only
Try/catch block can be used inside construcor and destructor

STL

STL contains several components but at its core are three key components. They are

containers
Algorithms
Iterators

Algorithms employ iterators to perform operations on objects stored in containers

A container is an object that actually stores data
An algorithm is a procedure that is used to process the data contained in the containers. Algorithms are implemented by template functions.
An iterator is an object ( like pointer ) that points to an element in a container.
To have access to STL algorithms, we must include in our program.
STL also contains few numeric algorithms under
containers are divided into three major categories sequential, associative and derived

Vectors

Vector is the most widely used container
A vector can change its size dynamically and therefore allocates memory as needed at runtime
We must include header file to use vector class in our program

typedef map<string, int> phonemap;

Strings

All algorithms that are applicable for containers can be used with string objects

Important Functions

at()
find()
insert()
lenght()
replace()

getline(cin, str); // Reads embeded blanks

Accessing characters in strings

at()
substr()
find()
find_first_of()
find_last_of()

We can also use overloaded [] operator ( which makes a string object look like an array ) to access individual element in a string

int x = s1.compare(s2);
if( x == 0 )
    cout << "s1 == s2";
else if( x > 0 )
    cout << "s1 > s2";
else
    cout << "s1 < s2";

compare () compares the strings s1 against s2 and assigned 0 if the strings are equal, a positive number if s1 is lexicographically greater than s2 or a negative otherwise

Values of type bool are automaticallt elevated to integers when used in nonBoolean expressions
The character type wchar_t has been defined in NSI c++ to hold 16-bit wide chracters
Wide character literal begin with letter L

L'xy' // Wide character literal

double x = double (m); // cpp type casting
double y = (double) n; // c type casting

The static_cast operator

syntax: static_cast (object);

int m = 10;
char ch = static_cast <char> (m);

We can use the typeid operator to obtain the types of unknown objects. Such as their classname at runtime.

char *objectType = typeid(object).name();

We must include header file to use the operators dynamic_cast and typeid which provide runtime type information (RTTI)
mutable keyword is used when we want to change/modify value of particular data item of const object
ANSI c++ standard has added a new keyword namespace to define a scope that could hold global identifiers.
We can define our own namespace in our program.

namespace NS1
{
    // declaration of variable, functions and classes etc.
}

namespace TestSpace
{
    int m;

    function display(int n)
    {
        cout << n;
    }
}

TestSpace::m = 100;

namespace can be nested within another namespace
To access nested namespace variable

cout << NS1::NS2::m;

Alternatively

using namespace NS!;
cout << NS2::m;

t main()
{
    using namespace NS1; // brings members of NS1 to current scope
}

Operator keywords

C++ contain 64 keywords including main.
The ANSI c++ standard has defined a new way to specify header files.They do not use .h extension to filename. eg. #include
However the traditional style , etc. is still fully supported

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2021: Top 5 Linux distros for beginners

G Sudarshan — Tue, 30 Mar 2021 11:45:21 +0000

1. Ubuntu

Ubuntu has always been first choice for almost every beginner to Linux world. Its easy to install, with good GUI. It is based on Debian. It is composed mostly of free and open-source software. Ubuntu is officially released in three editions: Desktop, Server, and Core for Internet of things devices and robots. All the editions can run on the computer alone, or in a virtual machine. You can download it from Official Ubuntu Website.

2. Zorin OS

I personally recommend this OS to everyone to try at least one time. It is super productive OS built on top of Ubuntu. It's Lite version is also available that runs smooth on older machines. I have ran them on machines having 1.5GB RAM and they worked fine. It is astonishing to see how software runs smoothly on the these older machines giving you modern experience. The Zorin Core OS also has phone connectivity feature through which you can control laptop through your smartphone, share the files from and to phone,can use smartphones keyboard to type on laptop also you can control mouse using smartphone's screen. You can download it from Official Zorin Website.

3. Elementory OS

Elementory OS in simple words can be described as open-source alternative which gives you feel of using macOS. Elementary OS is a Linux distribution based on Ubuntu LTS. It promotes itself as a “fast, open, and privacy-respecting” replacement to macOS and Windows and has a pay-what-you-want model. The operating system, the desktop environment, and accompanying applications are developed and maintained by Elementary, Inc. You can download it from Official Elementory Website.

4. Kali Linux

When you heard of Kali Linux most of you might remember the hacking scenes from movies but actually Kali Linux is a lot more useful distro to understand the the underlying working of an operating system. Even if you are not interested in Ethical hacking every programmer must try this distro at once to know more about networks and other related stuff.Kali Linux is a Debian-based Linux distribution geared towards various information security tasks, such as Penetration Testing, Security Research, Computer Forensics and Reverse Engineering. You can download it from Official Kali Linux Website.

5. MX Linux

MX Linux is a popular distro among programmers due to its lightning speed and Graphics. It's popular because it makes Debian more user friendly for beginning to intermediate (Not so much “non technical”) Linux users. It has newer packages from Debian backports repos; vanilla Debian uses older packages. MX users also benefit from custom tools which are great time savers. You can download it from Official MX Linux Website.

Top 10 YouTube Channels That Beginner Indian CSE Students Should Follow

G Sudarshan — Fri, 12 Mar 2021 14:16:19 +0000

1. GeeksforGeeks

NO. 1 is of-course GeeksForGeeks. Here you can get many useful playlists for Data structures and Algorithms, Interview Questions, Linux tutorials and many more.
you will find hundreds of videos that will provide you with the insight and the knowledge to become an efficient coder.
These videos are inclusive of real life interview experiences of Geeks who are placed in product and service based companies, webinars and
workshops with industry experts which are inclusive of a variety of
topics pertaining to Computer Science and coding, informative videos and
solutions to a variety of subjects and lastly, a music playlist for you
Code Jamming sessions!

2. Linux Tex

This is one of the most underrated channel about Linux on YouTube. I personally love the content this channel posts. Its about different Linux distros and different Linux applications. In short "Latest and the greatest of Linux news, tutorials, software and distro reviews brought right to you."

3. CodeWithHarry

This list can't br complted without superman of Hindi Dev tutorials i.e CodeWithHarry . Recently CodeWithHarry completed 1 million subscribers and its growing fast. As far as I know this is most subscribed programming related channel ran by an Indian.
Code With Harry attempt to teach basics and those coding techniques to people in short time which took ages to learn.
Code With Harry provide a quick and to the point demo along with resources of anything and everything I teach. Source code and other resources are hosted on website CodeWithHarry.com. provides source code(if any) in the description of every video.

In short "Quality programming videos in Hindi"

4. Gaurav Sen

Gaurav Sen is pioneer in System Design Videos on Youtube in India. He is one
of the earliest Competitive Programmer to talk about CP on YouTube.

Algorithms and System Design is a powerful combination!

Here are some things that been talked about on channel:

1) Competitive programming

2) System design

3) Artificial intelligence

5. Akshay Saini

Akshay Saini, Popularly known for his JS tutorial series "Namaste Javascript"
working as an Engineer at Uber. Apart from that, creates videos on this channel to help people with Interview preparation, Tech Tutorials, and
his personal Tips and Tricks to advance their career. Currently,
making videos about Frontend Interview Tips, his Interview Experiences
and core concepts of Javascript. Go ahead to the video section and do check out all of them.

6. Nishant Chahar

This is also one of the most underrated YouTube channel in India. Nishant talks to different Software developers about their journey in college and placements in series called "Placement Diaries"

7. Code for Cause

Code for Cause is an initiative started by a group of like-minded people working for a similar cause. Their primary focus is to provide guidance and mentorship to students. Not only for those who lack on-campus opportunities but also for those who lack awareness about the
possibilities in the field. They provide a hands-on learning experience and keep students informed about the latest trends in technology, opportunities so that they can keep up with the fast-paced digital world via following a pi-shape learning pattern.

8. Tanay Pratap

Tanay, an engineer at Microsoft. He shares what he knows to make you an awesome coder. The courses are 100% free. He makes videos about React JS and programming in general.

9. Love Babbar

Love Babbar, a graduate from NSUT, Delhi. SDE at Amazon,Gurugram. He has made videos related to placements with detailed information.

10. Get Saged

Get Saged is Popular for his playlist "Company Review : CTC, Recruitment Process, Profiles, Top Tips".

Umang Chauhan, an engineer who loves to explore, do weird stuff, and try out new things. Get Saged is a place to get into the not so boring life of an over-optimistic Indian trying to explore and get adventurous making
other people saged. He make videos about VLogs, Travel, Coding,
Placements, New Products, and much more that you can't even imagine.

This was the list of top 10 channels I felt useful, Thanks for reading:)

Happy Programming!

How to install MySQL and Workbench on Ubuntu 20.04 ( Localhost )

G Sudarshan — Wed, 24 Feb 2021 05:43:04 +0000

G. Sudarshan

Installing MySQL Server

Install the MySQL server by using the Ubuntu operating system package manager:

sudo apt-get update
sudo apt-get install mysql-server

If the secure installation utility does not launch automatically after the installation completes, enter the following command:

sudo mysql_secure_installation utility

Allow remote access

If you have ip tables enabled and want to connect to the MySQL database from
another machine, you must open a port in your server’s firewall (the default
port is 3306). You don’t need to do this if the application that uses MySQL
is running on the same server.

Run the following command to allow remote access to the mysql server:

sudo ufw enable
sudo ufw allow mysql

Start the MySQL service

After the installation is complete, you can start the database service by
running the following command. If the service is already started, a message
informs you that the service is already running:

sudo systemctl start mysql

Start the MySQL shell

There is more than one way to work with a MySQL server, but this article
focuses on the most basic and compatible approach, the mysql shell.

At the command prompt, run the following command to launch the mysql shell and enter it as the root user:

/usr/bin/mysql -u root -p

Installing MySQL Workbench

Step 1: Download configuration file from the apt repository

Using this method, you can install MySQL from the official apt
repository. For this purpose, download the repository configuration file
from the given URL https://dev.mysql.com/downloads/repo/apt/.
When you browse this URL, it will take you directly on the download
page from where you will download ‘mysql-apt-config_0.8.15-1_all.deb’ ( You might get latest version hence version no may be changed )
repo configuration file. Click on the Download option.

On the next page, it will ask you either you want to register or log in. If you don’t want to select these options then, click ‘No thanks, just start my download’ link to download the required package to your system’s local directory.

Step 2: Installation of MySQL Workbench

Use the following command to add MySQL repository URLs in the apt
sources list so that you can install the software on your Ubuntu 20.04
system.

cd Downloads

sudo apt install ./mysql-apt-config_0.8.16-1_all.deb

Step 3: Update apt-cache

Update the apt cache using the following command to update the configuration URLs.

sudo apt update

Step 4: Installing MySQL Workbench on Ubuntu 20.04

Now, it’s time to install MySQL workbench using the apt repository.
To do that, execute the following command to install MySQL workbench.

sudo apt install mysql-workbench-community

Step 5: Launch MySQL Workbench

Once the installation is complete, you will finally launch the MySQL
Workbench on your system. You can launch it using the terminal by typing
the following command:

mysql-workbench

You are DONE!

But wait a minute, It is equally important to know how to uninstall MySQL and MySQL Workbenc

Uninstall MySQL

Make sure MySQL is not running:

sudo systemctl stop mysql

Then purge all of the MySQL packages:

sudo apt purge mysql-server mysql-client mysql-common mysql-server-core-* mysql-client-core-*

Then delete all of the MySQL files:

sudo rm -rf /etc/mysql /var/lib/mysql /var/log/mysql

Finally clean all packages that are not needed:

sudo apt autoremove
sudo apt autoclean

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DEV Community: G Sudarshan

Unveiling the Common Traits of High-Performing Individuals Through Enneagram Types

The Dominance of Enneagram Type 9: The Peacemaker

The Strategic Thinkers: Enneagram Type 5 (The Investigator)

The Achievers: Enneagram Type 3 (The Achiever)

The Helpers: Enneagram Type 2 (The Helper)

The Perfectionists: Enneagram Type 1 (The Reformer)

The Loyalists: Enneagram Type 6 (The Loyalist)

Common Themes Across High Performers

Conclusion

Mastering Focus: 106 Insights for Effective Study Habits and Enhanced Concentration

How Install MySQL and Workbench on Windows

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Git and GitHub 101

Install

Configure tooling ( you have to configure this only one time after installation )

Create repositories

connecting Git and GitHub via SSH

Synchronize changes ( Most frequently used part )

Adding a remote repository

Remote repository synchronization

The .gitignore file

Branches

Glossary

Learning Resources

How To Install Node.js and NPM on Ubuntu 20.04

Barclays Internship Interview Experience

Github to Whatsapp Push Notifier using GitHub Actions

Github to Whatsapp Push Notifier

Link to GitHub repo: Github to Whatsapp Push Notifier

Whatsapp Push Notify Action 🚀

Usage

Whatsapp Push Notifier Output

Submission Category:

Additional Resources / Info

Link to GitHub repo: Github to Whatsapp Push Notifier

Installing Java on Ubuntu 20.04 [ Easy Way ]

In this guide, we will describe how to install Java on Ubuntu 20.04.

Installing OpenJDK 11

JAVA_HOME Environment Variable

Uninstalling Java

Conclusion

CPP Wiki: All you need to quick revise c++

CPP wiki

Lvalues and Rvalues

Initializing Local and Global Variables

Boolean Literals

Character Literals

Type Qualifiers in C++

Static member functions

Friend function

const member functions

Pointer to member

Constructor

Constant Objects

Destructor

Operator overloading

operators that cannot be overloaded

Type Conversion

class to basic type

One class to another class type

Abastract class

Declaring Pointer

Array of pointers

Char array of pointers

Pointers to functions

Pointers to objects

Pure virtual function

I/O Operations

ios format functions aios format functionsios format functionsios format functionsnd manipulators

width()

precision

fill()

own manipulator

File

`JAVA_HOME` Environment Variable