1. you should do: gem install 'rails' -v '3.2.13'
2. You should use a clean gemset, if you are using rvm, you can try: rvm gemset create rvm gemset use.
3. Now you have a clean gemset, it's time to install rails, gem install rails -v '3.2.13'
4. and then create a rails app, rails new app_name.

Similarly, you may ask, how do I downgrade Rails version?

How can I downgrade to version 3.2.

I tried the following:

1. I opened command prompt.
2. I typed gem uninstall rails.
3. Some options came for rails version then I selected my current version and pressed entered.
4. Then typed gem install rails -v 3.2.
5. I went to my Site directory and typed rails new blog.

Similarly, how do I change Rbenv version? ruby-version file in the current working directory with the rbenv local command. The global ~/. rbenv/version file. You can modify this file using the rbenv global command.

Beside above, how do I find Rails version?

To find out what the most recent Rails version is, use the command gem search rails | grep "^rails " . As I am writing this, it is 5.0. 1. Check that the correct version has been installed using bundle exec rails -v which should output Rails 5.0.

How do I switch between versions of Ruby?

1. Follow the installation instructions.
2. Install ruby-build.
3. Run rbenv install x.x.x where x.x.x is the version (use rbenv install --list to see which ones are available.
4. Run rbenv global x.x.x to change your global Ruby version.

Related Question Answers

How do I install a new version of Ruby?

To install Ruby from the default Ubuntu repositories, follow these steps:

1. First, update the packages index: sudo apt update.
2. Install Ruby by typing: sudo apt install ruby-full.
3. To verify that the installation it was successful run the following command which will print the Ruby version: ruby --version.

Where does Homebrew install Ruby?

To install Homebrew, type this command into your Terminal window: /usr/bin/ruby -e "$(curl -fsSL Homebrew/install/master/install)" Homebrew and its installation script are written in Ruby, and we'll use the default Ruby interpreter that comes with macOS to install it.

How do I install gems?

To install a gem, use gem install [gem] . Browsing installed gems is done with gem list . For more information about the gem command, see below or head to RubyGems' docs.

How do I change Ruby version on Mac?

Here is the process I followed:

1. Check the version of Ruby installed on your Mac. Open terminal and type:
2. Install the Ruby Version Manager rvm. In terminal, curl -L | bash -s stable.
3. Install the latest version of Ruby. rvm install ruby-[version]
4. Set the latest version of Ruby as the one you want to use.

What is the latest version of Rails?

3.1.3

How do I set up rails?

Let's look at the installation instructions for Rails on Windows and Linux.

Follow the steps given below to install Ruby on Rails using rbenv tool.

1. Step 1: Install Prerequisite Dependencies.
2. Step 2: Install rbenv.
3. Step 3: Install Ruby.
4. Step 4: Install Rails.
5. Step 5: Install JavaScript Runtime.
6. Step 6: Install Database.

How do I upgrade rails?

How to upgrade to Rails 6?

1. Step 1: Update Ruby to at least version 2.5.
2. Step 2: Upgrade Rails to the latest version in 5.2 series (5.2.
3. Step 3: Update the Gemfile with gem 'rails', github: 'rails/rails' and run bundle update rails.
4. Step 4: Run rails app:update from terminal.
5. Step 5: Uncomment defaults in new_framework_defaults_6_0.

How do I install sass?

Steps to Installing Sass on Windows (versions 7/8/10)

1. Open the Command Line (CMD) Tip!: Press Windows Key + R and type: CMD, then press Enter. The almighty Command Line (CMD) will appear:
2. Type the following command in the CMD (it doesn't matter which folder you're in): gem install sass. Command to install Sass.

How do I know if Ruby on Rails is installed?

First, check if you already have Ruby installed. Open the command prompt and type ruby -v. If Ruby responds, and if it shows a version number at or above 2.2. 2, then type gem --version.

How do I uninstall rails?

How to remove rails from Ubuntu 16.04 (Xenial Xerus)

1. Uninstall rails. To remove just rails package itself from Ubuntu 16.04 (Xenial Xerus) execute on terminal: sudo apt-get remove rails.
2. Uninstall rails and it's dependent packages.
3. Purging rails.
4. More information about apt-get remove.
5. See Also.

How do I run a Ruby script?

It's easy -- just create a file with the extension . rb , navigate to that file's directory from the command line, and run it using $ ruby filename. rb (the dollar sign is just the command prompt). You'll be able to gets from and puts to the command line now!

Who is Ruby?

Ruby is a demon on The CW Television Network's Supernatural portrayed mainly by actresses Katie Cassidy and Genevieve Cortese. In the fifteenth season, Ruby returns through flashbacks and a visit to the Empty, the angels and demons afterlife.

Which version of Ruby should I use?

Well the very obvious answer would be use the latest and stable version of Ruby. Considering your requests and vision for Ruby, Rails that are being up-grading process suggest to go the latest version of Ruby.

How do I know what version of Rbenv I have?

You can see if it is using rbenv by typing which ruby and it should print something out with . rbenv/ whatever. If not you need to set rbenv as your current ruby. You can do that like rbenv global 2.1.

What is Rbenv and RVM?

rbenv vs. RVM. RVM is used to manage and install different versions of Ruby and gemsets on system where Rbenv is a lightweight Ruby version management tool. Compared to RVM, rbenv does not manage gemsets nor install different Ruby versions. It only manages different ruby versions.

How do I reinstall Rbenv?

Installation

1. Install rbenv. $ brew install rbenv.
2. Set up rbenv in your shell. $ rbenv init.
3. Close your Terminal window and open a new one so your changes take effect.
4. That's it! Installing rbenv includes ruby-build, so now you're ready to install some other Ruby versions using rbenv install .

What does Rbenv rehash do?

First, rbenv creates shims for all the commands ( ruby , irb , rake , gem and so on) across all your installed versions of Ruby. Every time you install a new version of Ruby or install a gem that provides a command, run rbenv rehash to make sure any new commands are shimmed.

How do I remove Rbenv?

2 Answers

1. Remove using brew: brew remove rbenv.
2. Delete .rbenv directory: rm -rf ~/.rbenv.
3. Open .bash_profile file and delete any lines with rbenv in them: vi ~/.bash_profile.
4. Open .bashrc file and delete any lines with rbenv in them: vi ~/.bashrc.

Where is Rbenv installed?

rbenv is a tool that lets you install and run multiple versions of Ruby side-by-side. It's a simple, lightweight alternative to RVM that focuses solely on managing multiple Ruby environments. Each version of Ruby is installed in the ~/. rbenv/versions directory.

How do I uninstall RVM?

Remove rvm

1. Run the program which removes the rvm/ directory and all the rubies built within it: rvm repair rvm cleanup rvm implode --force.
2. Remove folders: rm -rf /usr/local/rvm sudo rm /etc/profile.d/rvm.sh sudo rm /etc/rvmrc sudo rm ~/.rvmrc.

How do I change RubyMine to Ruby?

Here is how to switch which Ruby you use in RubyMine.

1. File → Settings (Or press Ctrl+Alt+S )
2. Select "Ruby SDK and Gems" from the left pane.
3. Switch your "Ruby interpreter".

How do I update RVM?

First of all, update your RVM installation by running rvm get stable . To make sure you're running the new RVM version, you'll then need to run rvm reload (or just open a new terminal). Once that's done, you can ask RVM to list the ruby versions available to install by running rvm list known .

What is a Ruby Gem programming?

RubyGems is a package manager for the Ruby programming language that provides a standard format for distributing Ruby programs and libraries (in a self-contained format called a "gem"), a tool designed to easily manage the installation of gems, and a server for distributing them.

How do I install the latest version of Ruby on Ubuntu?

To install Ruby from the default Ubuntu repositories, follow these steps:

1. First, update the packages index: sudo apt update.
2. Install Ruby by typing: sudo apt install ruby-full.
3. To verify that the installation it was successful run the following command which will print the Ruby version: ruby --version.

What is Rbenv?

rbenv is a new lightweight Ruby version management tool built by Sam Stephenson (of 37signals and Prototype. js fame). The established leader in the Ruby version management scene is RVM but rbenv is an interesting alternative if you want or need something significantly lighter with fewer features.

How do I download Ruby on Ubuntu?

To install Ruby from the default Ubuntu repositories, follow these steps:

1. First, update the packages index: sudo apt update.
2. Install Ruby by typing: sudo apt install ruby-full.
3. To verify that the installation it was successful run the following command which will print the Ruby version: ruby --version.

How do I uninstall Ruby on Mac?

Just delete /System/Library/Frameworks/Ruby. framework , /Library/Ruby , and erb , gem , irb , rdoc , ri , ruby , and testrb from /usr/bin . Warning: OS X expects and sometimes relies on frameworks and software shipped with the system. It would be a very bad idea to remove the system Ruby.

How do I download Ruby on my Mac?

How to Install Ruby on a Mac

1. Step 1 - RVM. What you might be interested to know is that Ruby comes preinstalled on your Mac.
2. Step 2 - Load RVM into the Shell.
3. Step 3 - Restart Terminal.
4. Step 4 - Download the Latest Version of Xcode.
5. Step 5 - Download Ruby 1.9.
6. Step 6 - Make 1.9.
7. Step 7 - Finished.