How do I edit a gem file?

2 Answers. Go to the root of your application, and look for Gemfile. The root of the application is where you run rails server from, in case you were wondering :) Open Gemfile using your favorite text editor, and try changing the rubygems source from HTTP to HTTPS.

How do you update a gem to a specific version?

This will work if the gem has no shared dependencies with other gems.

  1. Find out the version you want to update to.
  2. Add that version explicitly to the Gemfile with , ‘=1.2.3’
  3. Run bundle install.
  4. Remove the explicit version number again.
  5. Run bundle install once more.

How do I open a GEM file?

You need a suitable software like RubyGems to open a GEM file. Without proper software you will receive a Windows message “How do you want to open this file?” or “Windows cannot open this file” or a similar Mac/iPhone/Android alert. If you cannot open your GEM file correctly, try to right-click or long-press the file.


A Gemfile is a file we create which is used for describing gem dependencies for Ruby programs. A gem is a collection of Ruby code that we can extract into a “collection” which we can call later. It lets you specify which gems you want to use, and which versions of these gems to use.

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How do I open Gemfile in text editor?

If you are using bundler for your project, you can use bundle open to automatically open an installed gem in your editor as specified by the EDITOR environment variable. For example, EDITOR=”subl -w” bundle open rake will open the version of rake your project is using in Sublime Text.

How do I uninstall a specific version of a gem?

Removing a specific gem

  1. sudo gem uninstall GEMNAME.
  2. sudo gem uninstall GEMNAME –version 1.1.0.
  3. sudo gem cleanup GEMNAME.
  4. sudo gem cleanup.


What is the latest version of Rails?

Ruby on Rails

Original author(s) David Heinemeier Hansson
Stable release / 5 May 2021
Written in Ruby
Size 57.8 MB

How do I open a Gemfile file on a Mac?

1 Answer. The command you’re looking for is gem install neography . To create a Gemfile for your application, you need to look into the bundler gem’s Gemfile. Basically, just create a file named Gemfile in your project root with a source and your list of gems and run the command bundle install .

What is GeM and how it works?

Government e-Marketplace (GeM) is a one stop portal to facilitate online procurement of common use Goods & Services required by various Government Departments / Organizations / PSUs. GeM aims to enhance transparency, efficiency and speed in public procurement.

What are gem files used for?

Vector image format used by GEM Draw, a basic drawing program for PCs; GEM stands for “Graphical Environment Manager,” and was a windowing system used by Atari ST computers and some Windows-based computers.

Is Ruby a diamond?

Other varieties of gem-quality corundum are called sapphires. Ruby is one of the traditional cardinal gems, together with amethyst, sapphire, emerald, and diamond.

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Category Oxide mineral variety
Formula (repeating unit) aluminium oxide with chromium, Al2O3:Cr
Crystal system Trigonal
Shine precious stones