You don't have write permissions for the /library/ruby/gems/2.3.0 directory.

Question

Problem :

I want to run the specs, you will need to install RSpec. First, run the gem install bundler in a root directory of the project. Then, run the bundle install. To run the single spec file, run the command like below: 

bundle exec rspec spec/00_hello_spec.rb.

To run all of a specs at once, run a bundle exec rspec.

So, I just typed gem install bundler to a terminal, and got below error 

“You don't have write permissions for the /Library/Ruby/Gems/2.3.0 directory.”

And this was in a project file in a atom *source "https://rubygems.org" gem "rspec", "~> 3.2.0" *

So my question is:

It seems like a terminal is giving me a response because I am not supposed to change anything on a ruby, and I want to bundle install inside of the atom? Could anyone tell me how to use the atom or run anything in the atom?

Answer 1

If you don't want to run the sudo then install a ruby using homebrew

brew install ruby

export GEM_HOME="$HOME/.gem"

gem install rails

You may also want to add export GEM_HOME="$HOME/.gem" to the ~/.bash_profile or .zshrc if you're using the zsh

 OR

Worked for me by using a parameter --user-install running below command:

gem install name_of_gem --user-install

Then it started to fetch and installed it.