最近はバックエンド言語毎にVMで環境用意して勉強したりしてて、その環境構築方法の管理を最近はGistでしてるのですが、何となくQittaに。※※但し、Gistは英語で書いてるので。

environment

host OS: Windows
VM: Virtual Box with Vagrant
- Ubuntu 18.0

CUIまたはGUIの仮想環境をUbuntuを使って構築するのはこっち。

Ruby on Rails

Install latest version

terminal

# install in one time
sudo apt install autoconf bison build-essential libssl-dev libreadline-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm-dev

# install rbenv
# rbenv is tool to manage a few of ruby versions and enable to change ruby ver. project by project.
git clone https://github.com/rbenv/rbenv.git ~/.rbenv
echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc
echo 'eval "$(rbenv init -)"' >> ~/.bashrc
source ~/.bashrc
git clone https://github.com/rbenv/ruby-build.git "$(rbenv root)"/plugins/ruby-build

# Install ruby
rbenv install --list
rbenv install 2.〇.〇
rbenv global 2.〇.〇

# Instal yarn
# Rails6 needs webpacker, and Webpacker needs yarn to install
curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
sudo apt update
sudo apt install yarn

# Install Rails
gem install rails --no-document

# install webpacker
# inner App
rails webpacker:install

Install RubyonRails by "apt install"

terminal

sudo apt install -y ruby ruby-dev build-essential
sudo apt install yarn

sudo gem install rails

"-y" means "All Yes"
build-essential contain information about package to build Debian pack.
- If do not build Debian, build~ is not needed
- Reference

Nodejs

rails6 uses webpacker, which needs nodejs

terminal

# first, install nodejs and npm
sudo apt install -y nodejs npm

# install n-package
sudo npm install n -g

# by n-package, install node
sudo n stable

# uninstal old nodejs and npm, and re-login
sudo apt purge -y nodejs npm
exec $SHELL -l

# confirm
node -v

Rust

when discord changed golang to Rust, I just tried this and coded a little.

terminal

sudo apt install build-essential

# install rust
curl https://sh.rustup.rs -sSf | sh

# add the pass
source $HOME/.cargo/env

Java

terminal

sudo apt update
sudo apt install git
sudo apt install openjdk-11-jdk

# confirmation
java --version

PHP

Python