Software⏱️ 3 min read📅 2026-06-11

How to Fix: Rails - Installation Error

Rails installation error in Ubuntu 12.10 resolved by adding missing package for Ruby on Rails.

Quick Answer: Add the 'ruby-rails' package to install rails correctly.

📋 Table of Contents

  1. ⚠️ Common Causes
  2. 🚀 How to Resolve This Issue
  3. ✨ Wrapping Up

The issue you're encountering is a common problem in Ubuntu, where the 'rails' command can't be found after installation. This error affects users who have installed Ruby and Rails on their system using APT (Advanced Package Tool) for package management.

It's frustrating because it seems like the installation process has failed, but the issue persists even after trying to run the 'rails' command in a new terminal. To resolve this issue, we'll guide you through two methods to install Rails and ensure its availability in your system.

⚠️ Common Causes

  • The primary reason for this error is that the Ruby version manager (RVM) isn't properly configured on your system. RVM is required to install and manage different versions of Ruby, including the one used by Rails.
  • An alternative cause could be that the package 'ruby-railties-3.2' hasn't been installed correctly or isn't available in the repositories.

🚀 How to Resolve This Issue

Using RVM to Install Ruby and Rails

  1. Step 1: Step 1: Reconfigure RVM to use the correct version of Ruby for Rails installation. Run the following command: `rvm use 1.9.3 --default`
  2. Step 2: Step 2: Verify that RVM has been successfully configured by running the following command: `rvm requirements`
  3. Step 3: Step 3: Install Rails using RVM by running the following command: `gem install rails`

Installing Ruby and Rails Manually

  1. Step 1: Step 1: Install Ruby manually from the official Ruby website. Download the installer for Ubuntu from .
  2. Step 2: Step 2: Extract the downloaded archive to a directory of your choice (e.g., `/usr/local/ruby`). Run the following command to add the extracted Ruby directory to the system's PATH environment variable: `export PATH=$PATH:/usr/local/ruby/bin`

✨ Wrapping Up

To resolve the 'rails' installation error in Ubuntu, you can use either method 1 (RVM) or method 2 (manually installing Ruby and Rails). By following these steps, you should be able to install Rails successfully and avoid any future issues with package management.

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