---
title: Notes
url: https://www.abhinav.co/notes
summary: My notes on things I learn while building software, plus unpolished thoughts.
author: Abhinav Saxena
---

# Notes

# (Unpolished) Notes and TIL

My notes on things I learn while building software. I also add a lot of unpolished thoughts here, mostly to safekeep and refer to them later.



- 06 Jun 2023 » [How to convert Elixir's NaiveDateTime to Unix timestamp](/how-to-convert-elixir-naivedatetime-to-unix-timestamp)

- 04 Apr 2023 » [How to fix Swoosh error](/swoosh-module-false-is-not-available-error)

- 10 Feb 2023 » [How to rename an Elixir Phoenix app](/rename-elixir-phoenix-project)

- 30 Jan 2023 » [How to enable CORS in Nginx for an Elixir Phoenix app?](/enable-cors-for-nginx-reverse-proxy)

- 29 Jan 2023 » [How to set up an Ubuntu Linux machine for Phoenix Elixir deployment](/setting-up-ubuntu-linux-for-phoenix-deployment)

- 29 Jan 2023 » [How to fix missing missing yeccpre.hrl error](/how-to-fix-yeccpre-hrl-no-file-or-directory-error)

- 29 Jan 2023 » [How to change group of a file on Linux?](/how-to-change-group-of-a-file)

- 19 Jan 2023 » [How to fix Elixir Phoenix error "Could not start application xmerl"](/how-to-fix-mix-error-could-not-start-application-xmerl-phpoenix-elixir)

- 19 Jan 2023 » [How to backup AWS RDS Postgres database to a file?](/how-to-backup-postgres-data-using-pg-dump-with-aws-rds)

- 12 Jan 2023 » [Ubuntu Linux - How to fix missing shared library in Passenger](/passengeragent-error-while-loading-shared-libraries-cannot-open-shared-object-file-no-such-file-or-directory)

- 12 Jan 2023 » [How to create a passwordless sudo user on Ubuntu Linux?](/how-to-create-a-sudo-user-on-ubuntu-linux-without-password)

- 19 Oct 2022 » [Notes on Paul Graham's essay - Alien Truth](/notes-on-paul-graham-essay-alien-truth)

- 05 Oct 2022 » [Fonts that I like to use frequently](/fonts-that-i-use-frequently)

- 24 Aug 2022 » [SSH Agent error after restarting computer](/ssh-agent-related-errors-after-restarting-computer)

- 04 Dec 2020 » [Monorepo and Heroku](/monorepo-and-heroku)

- 01 Sep 2020 » [8 useful Rails Bytes to improve your development process](/useful-railsbytes-templates)

- 29 Aug 2020 » [Custom fonts in your Rails app](/custom-font-with-rails)

- 28 Aug 2020 » [Mac - How to fix Python error "ERROR:root:code for hash md5 was not found"](/fix-python-error-root-code-for-hash-md5-not-found)