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Author: Sreekumar Kj

Sreekumar (KJ) has been a hobby programmer from school days. Codemarvels is his personal blog from the year 2010, where he writes about technology, philosophy, society and a bit about physics. He now runs a conversational AI company - DheeYantra - focusing his efforts to help businesses improve operational efficiency using digital employees powered by AI.
technology

Network devices not found after Ubuntu upgrade from 20.04 LTS to 22.04 LTS

Posted on March 17, 2024 by Sreekumar Kj / 0 Comment

I had recently upgraded my laptop from Ubuntu 20.04 from 22.04. Once restarted after the upgrade, my laptop just wouldn’t connect to any network (LAN/Wifi/USB t...

technology

Fix ChromaDB startup error: Your system has an unsupported version of sqlite3.

Posted on March 11, 2024 by Sreekumar Kj / 0 Comment

Problem: After installing chromadb, when we try to start it using the command chroma run --host localhost --port 8000 --path /home/user/chromadata Its give this...

technology

Tweaked steps to prevent path errors in ionic capacitor + reactJS projects

Posted on April 21, 2023 by Sreekumar Kj / 0 Comment

Follow these: sudo chmod -R 777 . #incase sudo trapped at install time.ionic capacitor copy ioscp -r build/static ios/App/App/public/{custom-context-path-if-any...

technology

A QR Code Scanner Component for Cordova in ReactJS that works on Android.

Posted on April 16, 2023 by Sreekumar Kj / 0 Comment

Yes, a component that does the job well. Code below, customise for your use case. Note: It does not use the “cordova-plugin-qrscanner” which is broken at the ti...

technology

Ubuntu Fix: Newly added volume shows size of only few 100 MBs

Posted on April 16, 2023 by Sreekumar Kj / 0 Comment

Run this command, (assuming the format and mounting was done correctly). sudo resize2fs /dev/{device} Kj    Sreekumar KjSreekumar (KJ) has been a hobb...

technology

Runbook: Upgrade NodeJS on Ubuntu

Posted on April 8, 2023 by Sreekumar Kj / 0 Comment

Here are the steps you can follow to upgrade NodeJS on an Ubuntu system. sudo rm -rf /usr/local/bin/npm /usr/local/share/man/man1/node* ~/.npm sudo rm -rf /usr/...

technology

Convert ReactJS App to Android App on Ubuntu

Posted on April 8, 2023 by Sreekumar Kj / 0 Comment

Install Cordova npm install cordova -g Create a Cordova project cordova create ReactBasedPhoneApp Open package.json of the existing ReactJS App.Copy the section...

technology

Fix: Cordova App on Android shows blank screen with ERR_CONNECTION_REFUSED

Posted on April 8, 2023 by Sreekumar Kj / 0 Comment

Problem: The Cordova App when run on Android give a Connection refused error on https://localhost/* URLs. Fix: Follow these steps: Probable Reason: Lo...

technology/Tutorial / Run-book

Upgrade NodeJS on Ubuntu

Posted on April 8, 2023 by Sreekumar Kj

Here are the steps you can follow to upgrade NodeJS on an Ubuntu system. sudo rm -rf /usr/local/bin/npm /usr/local/share/man/man1/node* ~/.npm sudo rm -rf /usr/...

technology

Easy Engine – change domain on WordPress website.

Posted on April 3, 2023 by Sreekumar Kj / 0 Comment

I had recently lost my domain codemarvels.com; the warning emails from my domain provider was reaching a currently unused inbox, and thus had to spawn up the sa...

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Recent Posts

  • Aindram Volume 01, My First Stint at AI Music Production
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