Manage the version of Ruby itself with rbenv

What is this?

This is a memo when installing via the version control tool when installing Ruby. It is explained in the installation on Ubuntu.


Install rbenv

$ sudo apt-get update
$ cd
$ git clone ~/.rbenv
$ echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc
$ git clone ~/.rbenv/plugins/ruby-build
$ echo 'export PATH="$HOME/.rbenv/plugins/ruby-build/bin:$PATH"' >> ~/.bashrc
$ source ~/.bashrc

Install Ruby

Specify the version you like, install it, and specify to use that version.

$ rbenv install -l
$ rbenv install 2.7.1
$ rbenv global 2.3.1

Install bundler

$ gem install bundler
$ rbenv rehash

Install the bundle package

$ bundle install

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