Haroldo Furtado haroldofurtado

Ubuntu 20.04 Ruby and Elixir (and Misc) Development Setup

Guide to setting up a new Ubuntu 20.04 dev environment with Ruby, Elixir and Node.js installed with the asdf version management tool along with PostgreSQL & PostGIS.

Update system and install prerequisite packages

Some of these packages may already be installed

sudo apt-get install autoconf automake binutils build-essential curl \
 dirmngr dnsutils fonts-liberation fonts-liberation2 fontconfig g++ gcc gdal-bin git \

set -e, -u, -o, -x pipefail

The set lines

These lines deliberately cause your script to fail. Wait, what? Believe me, this is a good thing.
With these settings, certain common errors will cause the script to immediately fail, explicitly and loudly. Otherwise, you can get hidden bugs that are discovered only when they blow up in production.

set -euxo pipefail is short for:

set -e
set -u

	class Calc
	def sum(a, b)
	a + b
	end

	def multiply(a, b)
	a * b
	end
	end