How to install a gem or update RubyGems if it fails with a permissions error

How to install a gem or update RubyGems if it fails with a permissions error

ruby macos rubygems

ruby

How to avoid "cannot load such file -- utils/popen" from homebrew on OSX

ruby macos rubygems homebrew

ruby

Failed to build gem native extension (installing Compass)

ruby macos terminal compass-sass

ruby

gem eventmachine fatal error: 'openssl/ssl.h' file not found

ruby macos openssl homebrew eventmachine

ruby

Running pod setup gives me "bad interpreter: No such file or directory" error

ruby macos cocoapods podspec

ruby

Can't install gems on OS X "El Capitan"

ruby macos rubygems

ruby

RMagick installation: Can't find MagickWand.h

ruby macos imagemagick macos-sierra rmagick

ruby

ZSH complains about RVM __rvm_cleanse_variables: function definition file not found

ruby macos rvm zsh

ruby

how to solve "ruby installation is missing psych" error?

ruby-on-rails ruby macos rvm

ruby

Why does installing Nokogiri on Mac OS fail with libiconv is missing?

ruby macos nokogiri libxml2 libiconv

ruby

How to resolve "gpg: command not found" error during RVM installation?

ruby macos command-line rvm gnupg

ruby

How to resolve "You need to have Ruby and Sass installed and in your PATH for this task to work" Warning?

ruby macos bash terminal sass

ruby

rails + MySQL on OSX: Library not loaded: libmysqlclient.18.dylib

mysql ruby-on-rails ruby macos

ruby

'sudo gem install' or 'gem install' and gem locations

ruby-on-rails ruby macos rubygems

ruby

ERROR: While executing gem ... (Errno::EPERM) Operation not permitted [duplicate]

ruby macos rubygems osx-elcapitan compass

ruby