Most straight forward Ruby on Rails installation and set up guide is linked below -
Install Ruby On Rails on Ubuntu 26.04 Resolute Raccoon | GoRails
Additionally, I have compiled a detailed step by step guide to setup a Rails development environment below-
Update your system and install required packages:
sudo apt update
sudo apt install -y git curl build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm-dev libgdbm-compat-dev libdb-dev
Run the following to install mise:
curl <https://mise.jdx.dev/install.sh> | sh
Add mise to your shell (Bash/Zsh):
echo "eval \\"\\$(/home/debu/.local/bin/mise activate bash)\\"" >> ~/.bashrc
source ~/.bashrc
Verify:
mise --version