linux Archives | Madhurendra Sachan

IOT Push Button (Like Amazon Dash)

March 30, 2021March 24, 2017 by Madhurendra

Amazon Dash button is an incredible piece of hardware and another example of “applied engineering” in Amazon, just like Kindle. The inspiration for this project isn’t directly derived from amazon dash, I wasn’t aware of it until I started digging the internet but at end, I had to set the performance goal to Amazon dash, because … Read more

Cheap BLE : JDY-08

March 30, 2021January 15, 2017 by Madhurendra

Disclaimer : This post is based on my experience which is completely subjective, in no way I am promoting any application or product 😉 I have been trying to get my hands into BLE4.0 modules since long. As always I was looking for small, cheap solution, JDY-08 was one of solution I came across – … Read more

Adding a display over network !

February 23, 2017December 23, 2016 by Madhurendra

You are doomed if your laptop has only one HDMI Port & you are running Linux in that box. Unlike windows – where there are tons of easy to run solution, & there are still tons of solutions if you have big numbers in your pocket. Certainly – I neither wish to spend money on external VGA/HDMI … Read more

Just Another DIY “Smart” Watch

December 17, 2025November 29, 2016 by Madhurendra

Note : This article was written after project was partially completed, so i don’t have better images. There are hundred’s of projects for building “Smart watch using arduino”, I have curated a list of better projects at end of this article. I didn’t plan to copy any of given projects but at end it turned … Read more

Kindle Universal Dashboard

September 17, 2019October 30, 2016 by Madhurendra

Kindle is Super awesome ! Because of its e-ink display. I wanted a display to present data which has – Least power consumption, Not painful to eyes & obviously one which doesn’t emit blue light. E-Ink displays fit perfectly to my requirement – acquiring a display which can be driven using Raspberry Pi or Arduino is hard, … Read more

Custom Nginx with PageSpeed

March 30, 2021October 1, 2016 by Madhurendra

Pulling nginx from source, customizing & auto updating across servers is a pain, We use pagespeed & custom header modules across all our servers, it autominifies resources & increases page performance without giving pain.

Below is script we use :

Offline Wikipedia with Elasticsearch and MediaWiki

August 18, 2016 by Madhurendra

Wikipedia is Awesome ! It’s open, its free – Yea. & its huge in size, millions of articles but as developer how to exploit the free knowledge. I started digging internet just to find ways to exploit my fresh 9+ GB of XML Gzipped archive which seemed to me of no use as even a simple … Read more

Backup Server Configurations to Git

September 28, 2015 by Madhurendra

When you have multiple servers it pain to remember every configuration and it may take hours to configure servers again incase you need. It is also impractical to copy each files. There are few tools available but they come with overhead attached moreover its fun to write custom solutions 🙂 1. Create directory 2. cd … Read more

Cloning Server to New Hardware

October 4, 2015September 12, 2015 by Madhurendra

You can find many ways of cloning old server to new hardware, create diskimage and move to new hardware and if you have identical hardware use `dd` or similar tool to copy disks block by block, but if you have new hardware and want to move server without downtime and with no configuration change there … Read more

Monitoring Website for Downtime

September 6, 2015 by Madhurendra

Sometimes our in house server go down, But at production level we cannot take risk of 1min downtime, so we were supposed to monitor our server for downtime. Although there are many cheap services available but i decided to do it my own way, I can use this script in my RPI to monitor even … Read more