Thanks Nithya! for the great Birthday Gift

Feb 18, was my birthday. Myself and Nithya dont celebrate each others birthday, as all of the days are very precious for us.

I never gifted her anything. She also did not. But, for this time, she wondered me with a great gift.

Yes. It is a Free Software 🙂

She wrote a grammar checker (Conjunction Checker) for Tamil and released on Feb 18, with a nice blog post. It is here in Tamil

It was my decade dream to create a great spell checker for Tamil as a Free Software. Conjunction Checker is one of the big parts of it.

It has too many rules and she read them all, understood, converted as Python code.

It is the awesome birthday gift.

Nithya! You are my best gift. Thanks, is a simple word. It cant express what es I mean.

She is improving it a lot with more rules and testing.

Here is the code –

She made a video about this tool –

Today, She spoke about this in “ILUGC – Indian Linux Users Group – Chennai” Meet. So happy to see her giving a talk in my homeland.

I am working on making it as web application, so that anyone can use it.

Thanks to open-tamil python library for its all great features of handling tamil text easily.

I am seeing Nithya as avid reader, writer, dancer, home maker and now a programmer.

You can read all her books here –

Hoping to see more women contributors like Nithya in the upcoming days.




Annual Review – What I did on 2017?

2017 was a great year for me, as all the years. Sharing here on how it went. Yes. It is too late to write this now. It is because of the few lifestyle changes I am following. Its is OK to do many things slowly and drop few things. Am I right?

Health :

I was trying to reduce my ongrowing tummy for years. in 2017, took some serious, series of efforts.

  • Joined Zumba Dance class on Sep 2017. It is a thrice in a week class. I attend 2 classes, atleast.
  • Bought a cycle on October 2017 and went to office in cycle. It was around 40 km per round trip. Cycled for 2 months, twice in a week.
  • Exercised for 10-15 min every day, mostly.

With all these efforts, my hip size came to 34 from 39. It is a great improvement. Thanks to “Dude Academy” and Master Kannadasan for inspiring.

Got fever 4 times. Those bad days reminded how bad my health is. It is time to eat good food, and siddha medicines which gave enormous immunity in my school/college days. started to have the medicines prepared by my dad.

Stopped drinking cool drinks, fried items like pizza, burger etc.


  • Viyan got into a nearby school. He is in LKG now.
  • He sent hand drawn Deepavali Wishes post cards to all our friends.
  • Nithya learnt karagam, Poikal Kuthirai dances. She is performing in various event. She wrote a ebook on Javascript. Released a video on Bigdata and Elasticsearch
  • Brother Arulalan joined at meteorology department as scientist in Noida.
  • Brother Suresh got a government job.


Office works made me keep on learning new things. Elasticsearch, Spark, Druid, Python3, AWS api are some great things I explored. Completed reading one book fully on the technology I start to work.


  • Went to Vienna, Austria for a wikipedia hackathon. Met many interesting people and blogged the event happenings of Day 1, Day 2 and Day 3.
  • Went to Yelagiri for Nithya’s karagam dance on a government function.
  • Went to Kothagiri for marriage of Nithya’s friend’s sister.
  • Went to Kerala with Office friends and their Family.
  • Went to Pondicherry and visited science center, bharathiyar house etc.
  • Went to Melmalaiyanur with family.
  • Went to Beaches few times in the early morning. Those are really great times.
  • Went to DakshanChitra many times for Nithya’s dance practises.
  • Went to Sriperumbuthur as Nithya danced for Sri Ramanujar’s 1000th birthday celebrations.
  • Went to Kumbakonam and nearby places with office friends.
  • Went to few resorts with office friends.

Foss Contributions:

  • IITM and SSN College of Engineering, released a good Tamil Text-to-Speech system. Met IITM team and learnt how to install in linux. Automated and released it here.
  • In Vienna wikipedia hackathon, enabled LinguaLibre to upload voice files to wikipedia commons.
  • Helped to released a telegram bot to translate strings collaboratively for the english strings in openstreetmaps to tamil.
  • Helped to released a “Send to kindle” option for the ebooks in
  • Got some interest on adding interesting places to OSM. Used cycle to roam around tambaram and added many places with the app.
  • Conducted 2 hackathons for ilugc. one for tamil computing and one for wikipedia.
  • Conducted 1 event for ebook making training.


  • Found a social team “Agaththi” in Tambaram. Participating on their market for organic formers.
  • Filed few RTI in for the issues in Tambaram and got few resolved.


Wrote 57 blog post in this blog and 6 posts in Tamil in my tamil blog. This is low. Will try to increase next year. Writing a book on Python in Tamil. Hope will release by next year. But I have read plenty of books this year. I love reading than writing. Lazy me.

Books Read:

Thanks to PacktPub’s One free ebook per day, Kindle Unlimited Plan and All authors of for providing tons of great books to read.

With the Kindle device, I enjoyed plenty of hours in continuous reading.

Award :

Got an award for the contributions on Tamil computing on 2016 from The Tamil Literary Garden, Canada. Received Rs. 50,000 as prize money. Working on creating an organization with this money to do more contributions with more volunteers. Will ask for donations soon.


Was living a simple, minimalistic lifestyle.
Quited TV, Facebook and smartphone two years ago. Still able to live without them. Prioritized the life in the order of Health, Family, Office, Personal growth, FOSS Contributions.

Thus, the year 2017 was so great. It gave me great lessons via bad experiences too. Those are opportunities for me to learn about people and world.

Hope you too had a great year. Hoping that 2018 will be even more exciting for all of us.


Project-Idea : Custom data updater for mobile app is a good mobile app (Free Software) for navigation and adding Places (POI – Point of Interest) to

It uses offline data, to provide smooth user experience. OsmContributor, OSMAnd are other few android app, to contribute to OSM by adding POI. But we can feel the lag on navigating the map as they fetch real time data on every move over the map. is super fast. But because it uses only offline data. The provides updates for the data once in a month or twice.

We can see the POIs added by us. But, when we run a mapathon kind of events, many volunteers will be roaming around a city. Sometimes, they come to a street, where the POIs are added by someone else already.

When you are using for adding POI, we can not get the POIs added by other volunteers immediately. We have to wait for the updates provided by the team.

This leads to repeated adding of same POI many times. Even verifying for the same POI using other app is boring.

Checked for the team for providing options to update the data whenever required. But it is not on their roadmap.

Discussed this with “OpenStreetMap Asia” telegram group. Erwin Olario replied with few ideas.

  1. uses mwm format for the data
  2. can export data in mwm format
  3. gives steps on how to download latest data and use with

All we need now, is a mobile app to download the desired data from hotosm and place in the proper path of

We can develop this as a separate mobile app and distribute to all.

If this is done, anyone using can click another app, and update the osm data whenever required.

Reply here / Contact me if you are interested in doing this as a Free/OpenSource Project.

My mail id –


Update – 1

 Ilya Zverik has provided a daily snapshot for each country, but sometimes, it’s not available:



An Affordable Laptop from IIT Bombay

Last week Saturday, met Mr. Mohamed Kasim, from IIT Bombay.

He demonstrated me a tiny, lightweight, cute laptop.

It is a 11.6″ laptop, based on an atom quad core processor. It has 4GB RAM, 32 GB NAND flash, an expansion slot through which one can attach an optional 2.5″ HDD/SDD, and most importantly, 10 hours of time, thanks to a 10,000 mAh battery. It has two USB ports, a mini HDMI port and a microSD card slot. It also has wifi and bluetooth.

This laptop comes with Debian Linux operating system and a lot of useful software, such as LibreOffice, LaTeX, Scilab, OpenModelica, Inkscape, GIMP, Blender, OpenFOAM, eSim, Synfig Studio, and various editors and browsers.

The cost is 10,000 INR.

I checked for its performance. Opened LibreOffice, Eclipse, Gimp, Blender and explored their basic operations. The performance was smooth. Cant see any lagging or heating.

Currently, the laptop is available Institutes and organizations for bulk orders. The service and support support centers are being setup across the country.

It is really lightweight. It is price is too low for its performance. You will love to buy immediately if you see it and experience it. The same happened to me.

Read here the announcement from Prof. Kannan, IITB

Video –

A brochure on this laptop is available here:


If you are interested in buying it for your organization/college/school, contact Mr. Mohamed Kasim on mohamedkasim AT iitb DOT ac DOT in

Project-Idea : How can I pay some money for the pirated movies I watch?

pirated movies க்கான பட முடிவு

I try to watch movies in theaters most of the times. But when some good movies come, they go out of theaters, when I decide to watch. In Chennai, most moves wind up in 2 weeks.

Last week, Myself and Nithya watched the movie “Mayavan“, which I got from a friend, which was downloaded from internet. The movie is really interesting and the concept, acting, direction, cinematography, direction all are really nice. Never expected such things from a tamil movie. The next day, when we had a discussion about the film “Anbe Sivam“. Immediately, watched the movie on YouTube.  Yes, the full movie is available there.

We worried that we missed to watch the movie “Mayavan” on theater. We both are not active on social media and news sites. We get the info about good movies by word of mouth only. When friends praise a movie, we try to book in a nearby theater. Most of the times, it would gone away. We wait for few more weeks to get good HD pirated digital copy of the movie and watch it.

Piracy is evil. It is killing the cini industry. But it is non-stoppable.

Yes. I agree that. But, what we have to do when there is no screening of movies near us? Do we have to cross cities to watch a  movie ?

When I was a kind, in my native kanchipuram, there was Indira Theater. it will screen good movies for second time. When a movie go out of first time screens, in a month, Indira theater will screen it again. There was Pandiyan Theater, which screens for third and fourth times of good movies. Nowadays, those two theaters were closed. Cant see such theater in kanchipuram or in chennai.

Discussed a system with Nithya to pay for the movies we see in pirated copies or youtube like websites. She told that she can pay 100 Rs for each movie she sees from home.

Here is a concept.

1. A mobile app or web site to get donations.

2. It will list all the movies

3. User can select a movie

4. Producers Bank details are displayed here. User can add in own bank and transfer money or donate via our app/site.

5. Users enters “Donate” Button

6. It asks for amount and redirects to payment gateway

7. Payment should be done via Credit card, debit card, net banking, PayTM like systems etc

8. Once the payment is done, the amount should be credited to Producer’s account.


If such system is available, most of will be donate money for the movies we like. We can start with tamil movies, then we can expand to other languages.

The alternate solution now available is “Amazon Prime Movies”. I am still not a prime member. Never experience it. Dont know it will be a hit in country like India where broadband is still a dream in most of the places.

Offline watching is still the usual thing here. Most of the people, who travel in train or bus, are watching a movie. For them, offline sharing is the easiest way to watch the movies. I think, amazon prime can not reach them, as traveling wont get  good internet connection here.

I believe that such donation system will workout, if done properly and marketed by all the movie stars.

We need the following systems to build such donation system.

1. servers to run the application

2. mobile apps for android/iOS

3. Web site/ web application

4. Movies list

5. Producer’s account details


Need to discuss with the producer’s and get their account details.

We can expand the same idea to software industry, music industry and ebook industry too.

Comment here if you are agreeing/non-agreeing/interested to do this a project/etc

Promote this idea to the startups and investors. If someone can do, thats a happy news. if no one does, we can do it.



Image source –





Event Notes – Mini Mapping party at Kanchipuram

I went to my home town Kanchipuram, India for Christmas holidays. We had a good active Linux Users Group called KanchiLUG there few years ago. We still have few members there doing nice works there.

Decided to have a mini mapping party at kanchipuram on Dec 25, 2017. sent a mail to our mailing list and asked people to join the party.

We had one volunteer replied. T. Dhanasekar. We met on dec 25 10 am. Created an account for him in openstreetmaps.

We both dont use smartphone. I borrowed my wife Nithya’s phone. He did not get any. I dont have a motor bike there. I already took his bike. Hence, we decided to roam around the city together and add interesting places to OSM.

I explained app and how to add POI. We found many schools, temples, shops, clinics etc and added them. For few POI’s, we did not find suitable types in

Will ask the team to add more types.

In 2 hours, we added 75 places. There are still tons of places to add at Kanchipuram. We will add them in upcoming days.


Openstreetmaps Mapping Party at kanchipuram, Dec 25,2017, 10-1

At kanchilug, we planned to have a openstreetmaps mapping party.

Date : Dec 25 2017,10 am – 1 pm

Starting place : 10c,csm street, pilliyar palayam, kanchipuram.

We can have some intro to osm,, osm contributor android apps.

Then, we can roam around the city to add Point Of Interest (significant places) to osm using those apps.

If you are new to openstreetmaps, see the video in tamil by prasanna of puduvailug.

Created a telegram group for tomorrow’s mapping party.

Join there.

We can discuss for any quick questions on party.

For those who don’t have smartphone like me,

You can join the telegram using web browser in your laptop/desktop


Login with your mobile number and join the group mentioned above.

You can read all the discussions any time.

See you there on the party.

Project Idea – Mobile app to add POI using openstreetmaps

My friend David Rajamani is looking for an android app to be developed as a module to be used with other application being developed.

User should login with oauth from another app.

Then he should point a place the map displayed and add details about that place.

The data should be sent to and their own database. android app can be taken as example and can be converted as module or pluggable into another app.

If you are interested in doing this project, mail me on


Project Idea – Location aware mobile apps to explain historical places

Last week, met my old friend siva, of Tamil Heritage Trust, after few years. Their group is serving the community, by explaining all the history of great places of tamilnadu.

He explained me about a requirement of new mobile app.

Location aware app to explain on historic places.

Imagine, you goto tiger cave, near mahabalipuram. While wondering what is that, how it will be an app displays all the history about that place, when you go near or search for it.

Like that we can give details about all the monuments at mahabalipuram.

We can extend that to all the temples at kanchipuram or all around tamil Nadu.

The app should be released as free/open source software.

It can be a native or react native or hybrid app.

If you are interested in contributing for this, reply, comment here or mail me on


How to recover deleted local files from Git repository?

I have a good habit of storing all my development projects and source code in a git repo.
I do commit often and once a new feature is implemented in development branch.
Will test for the feature and merge with master and push to remote git.

This habit saved my life recently.

I am working on a python project.
When cleaning up the folders, wanted to delete all the python compiled files. *.pyc

I wanted to execute the command

rm *.pyc

But, My C key in keyboard was stuck and it was omitted.

The executed command was

rm *.py



All my python files were deleted 😦

Git and my habit of committing often saved me here.

Searched for restoring deleted files from git and found the following link.

The answer to restore all the deleted files from git repo is as below.

To recover all unstaged deletions at once, automatically, without specifying each single path:

git ls-files -d | xargs git checkout —

To recover all staged deletions at once, automatically, without specifying each single path:

git status | grep ‘deleted:’ | awk ‘{print $2}’ | xargs git checkout —


I used this command
git ls-files -d | xargs git checkout —

Thank God. All my python files are restored now.

My humble request to all my dear readers is,
“Make a habit of using Git or any version control. Do commit often, always. It will save your life for sure”

Thanks to Git developers for saving life of developers.