Blog and Portfoliohttps://codenamesubho.dev/https://codenamesubho.dev/blog/2019-04-28-exploring-zappa/https://codenamesubho.dev/blog/2019-04-28-exploring-zappa/Deploying a Django report-scheduler on AWS Lambda with Zappa instead of a traditional web+Celery setup, and the networking, credentials, and SNS gotchas that came with it.Sun, 28 Apr 2019 00:00:00 GMThttps://codenamesubho.dev/blog/2019-04-08-increasing-postgres-column-name-length/https://codenamesubho.dev/blog/2019-04-08-increasing-postgres-column-name-length/Notes on hitting Postgres's 63-byte column name limit and 1600-column limit while building pivot/transpose tables for an analytics project, and how to work around both.Mon, 08 Apr 2019 00:00:00 GMThttps://codenamesubho.dev/blog/2017-10-18-understanding-rapidjson-part-2/https://codenamesubho.dev/blog/2017-10-18-understanding-rapidjson-part-2/A follow-up to the original RapidJson post with a more detailed example showing how to build nested objects and arrays into a JSON DOM tree in C++.Wed, 18 Oct 2017 00:00:00 GMThttps://codenamesubho.dev/blog/2017-04-29-glow-leds-with-google-home/https://codenamesubho.dev/blog/2017-04-29-glow-leds-with-google-home/Voice-controlling LEDs on a Raspberry Pi using Google Home custom commands, Api.ai intents/webhooks, and a small Flask app driving the GPIO pins.Sat, 29 Apr 2017 00:00:00 GMThttps://codenamesubho.dev/blog/2016-03-20-learnings-from-bugyou/https://codenamesubho.dev/blog/2016-03-20-learnings-from-bugyou/Notes on building Bugyou, a fedmsg consumer that reports Autocloud image build test results to tracking services, and a gotcha with multiprocessing Manager proxy dicts.Sun, 20 Mar 2016 00:00:00 GMThttps://codenamesubho.dev/blog/2015-09-23-dev-sprint-pyconin-2015/https://codenamesubho.dev/blog/2015-09-23-dev-sprint-pyconin-2015/Volunteering to mentor the Pagure and Anitya devsprints at PyCon India 2015, and a rundown of how the sprint track worked.Wed, 23 Sep 2015 00:00:00 GMThttps://codenamesubho.dev/blog/2015-07-31-event-report-fudconin-2015/https://codenamesubho.dev/blog/2015-07-31-event-report-fudconin-2015/A day-by-day recap of FUDCon India 2015 in Pune — talks on Fedora release engineering, GlusterFS, Drupal 8, SELinux, kernel modules, Docker, and Flask.Fri, 31 Jul 2015 00:00:00 GMThttps://codenamesubho.dev/blog/2015-06-20-my-final-year-project-online-fir-gd-lodging-system/https://codenamesubho.dev/blog/2015-06-20-my-final-year-project-online-fir-gd-lodging-system/A college final-year Django project for lodging FIRs/General Diaries online, using government ID verification, Site2SMS OTPs backed by Redis, and PDF report generation via email.Sat, 20 Jun 2015 00:00:00 GMThttps://codenamesubho.dev/blog/2015-02-26-understanding-rapidjson/https://codenamesubho.dev/blog/2015-02-26-understanding-rapidjson/An introduction to generating, parsing, and manipulating JSON with the RapidJSON C++ library, with full sample code for writers, documents, and DOM manipulation.Thu, 26 Feb 2015 00:00:00 GMThttps://codenamesubho.dev/blog/2015-01-16-integrating-gcov-lcov-into-cppagent-build-process/https://codenamesubho.dev/blog/2015-01-16-integrating-gcov-lcov-into-cppagent-build-process/Wiring gcov/lcov code coverage into the CMake-generated build for MTConnect Cppagent, including a custom "make cov" target that runs tests and generates an HTML coverage report.Fri, 16 Jan 2015 00:00:00 GMThttps://codenamesubho.dev/blog/2015-01-09-using-gcov-lcov-test-coverage-cppagent/https://codenamesubho.dev/blog/2015-01-09-using-gcov-lcov-test-coverage-cppagent/Tracing through the CMake-generated Makefiles for MTConnect Cppagent to find where to add the --coverage flag so gcov/lcov can produce test coverage data.Fri, 09 Jan 2015 00:00:00 GMThttps://codenamesubho.dev/blog/2014-12-26-gcov-lcov-cpp-code-coverage-statistics/https://codenamesubho.dev/blog/2014-12-26-gcov-lcov-cpp-code-coverage-statistics/A step-by-step walkthrough of using gcov and lcov to generate HTML code coverage reports for a simple C++ program.Fri, 26 Dec 2014 00:00:00 GMThttps://codenamesubho.dev/blog/2014-10-27-setting-up-mtconnect-cpp-agent/https://codenamesubho.dev/blog/2014-10-27-setting-up-mtconnect-cpp-agent/How to build MTConnect Cppagent from source, run it against the adapter simulator, query it with curl, and run its test suite.Mon, 27 Oct 2014 00:00:00 GMThttps://codenamesubho.dev/blog/2014-10-11-flask-app-deployment-mod-wsgi-part-2/https://codenamesubho.dev/blog/2014-10-11-flask-app-deployment-mod-wsgi-part-2/Deploying a Flask app on Apache with mod_wsgi: installing packages, setting up a virtualenv, writing the .wsgi file, configuring Apache, and locking down file permissions with a dedicated group.Sat, 11 Oct 2014 00:00:00 GMThttps://codenamesubho.dev/blog/2014-10-07-flask-app-deployment-mod-wsgi-part-1/https://codenamesubho.dev/blog/2014-10-07-flask-app-deployment-mod-wsgi-part-1/Launching an AWS EC2 instance and connecting to it via SSH as the first step toward deploying a Flask app with mod_wsgi.Tue, 07 Oct 2014 00:00:00 GMThttps://codenamesubho.dev/blog/2014-09-13-10-years-of-dgplug/https://codenamesubho.dev/blog/2014-09-13-10-years-of-dgplug/A day-by-day recap of the 5-day workshop at NIT Durgapur celebrating 10 years of DGPLUG, covering Fedora, Python, Vim, Flask, unit testing, documentation, and Git.Sat, 13 Sep 2014 00:00:00 GMThttps://codenamesubho.dev/blog/2014-03-28-codeflu-returns/https://codenamesubho.dev/blog/2014-03-28-codeflu-returns/A catch-up post after a year away from the blog — workshops, Pycon India, Hackjam, and side projects like Kickchat and Buff-tweet.Fri, 28 Mar 2014 00:00:00 GMThttps://codenamesubho.dev/blog/2013-04-25-disabling-discrete-amd-graphics-card-in-linux/https://codenamesubho.dev/blog/2013-04-25-disabling-discrete-amd-graphics-card-in-linux/How to disable a discrete AMD graphics card in a switchable graphics laptop setup on Linux using vgaswitcheroo, to cut heat, fan noise, and power draw.Thu, 25 Apr 2013 00:00:00 GMThttps://codenamesubho.dev/blog/2013-03-30-rc-local-in-fedora-16-onwards/https://codenamesubho.dev/blog/2013-03-30-rc-local-in-fedora-16-onwards/Fedora 16 dropped rc.local by default after moving to systemd — here's how to bring it back so you can still run commands at boot.Sat, 30 Mar 2013 00:00:00 GMThttps://codenamesubho.dev/blog/2013-03-29-adding-users-to-sudoers-list/https://codenamesubho.dev/blog/2013-03-29-adding-users-to-sudoers-list/A quick walkthrough of adding a user to the sudoers list with visudo, plus a note on the security tradeoffs of granting full root privilege versus scoping it to specific commands.Fri, 29 Mar 2013 00:00:00 GMThttps://codenamesubho.dev/blog/2013-03-12-mozcafe-bcrec/https://codenamesubho.dev/blog/2013-03-12-mozcafe-bcrec/Notes from a Mozilla #mozcafe workshop at college covering Webmaker tools — Popcorn Maker, Thimble, X-Ray Goggles — and Mozilla localization.Tue, 12 Mar 2013 00:00:00 GMThttps://codenamesubho.dev/blog/2013-03-02-python-share-value-yahoo-finance/https://codenamesubho.dev/blog/2013-03-02-python-share-value-yahoo-finance/A pointer to a friend's Python script for fetching a company's share value from Yahoo! Finance.Sat, 02 Mar 2013 00:00:00 GMThttps://codenamesubho.dev/blog/2013-03-02-second-day-of-summer-training-dgplug-vi/https://codenamesubho.dev/blog/2013-03-02-second-day-of-summer-training-dgplug-vi/A pointer to a friend's writeup on efficiently using the VI editor from the DGPLUG summer training series.Sat, 02 Mar 2013 00:00:00 GMThttps://codenamesubho.dev/blog/2012-10-02-fhs/https://codenamesubho.dev/blog/2012-10-02-fhs/A quick primer on the Linux File Hierarchy Standard (FHS) and what each top-level directory under / is for, from a DGPLUG summer training session.Tue, 02 Oct 2012 00:00:00 GMThttps://codenamesubho.dev/blog/2012-04-18-hello-world-foss/https://codenamesubho.dev/blog/2012-04-18-hello-world-foss/A short introduction to Free and Open Source Software (FOSS/FLOSS) and what "free" means in this context — freedom, not price.Wed, 18 Apr 2012 00:00:00 GMT