sudo gem install or gem install and gem locations

Question

Running  sudo gem list --local  and  gem list --local  give me differing results  My gem path is set to my home folder and only contains the gems from  gem list --local    It s probably not good to have gems installed in different directories on my computer  so should I have the gem path set differently  and should I always use sudo when installing something   my    profile export PATH  opt local bin  opt local sbin  PATH export PATH   usr local bin  usr local sbin  usr local mysql bin  PATH       bash profile is empty

User · Answer

You can install gems into a specific folder  example vendor   in your Rails app using    bundle install --path vendor

User · Answer

Related  for bundler users   if you want a lighter alternative to RVM which will put everything in a user-specific well known directory  I recommend using   bundle install --path  HOME  gem   if you want to install gems to the same place that  gem install --user-install GEMNAME   will install them   gem ruby RUBYVERSION in your homedir   See the other comment on this question about --user-install    This will make the gems visible to gem list  uninstallable via gem uninstall  etc  without needing sudo access  Runnable scripts installed by gem or bundler can be put into your path by adding   HOME  gem ruby RUBYVERSION bin   to your  PATH  gem itself tells you about this if it isn t set when you do gem install --user-install

User · Answer

sudo gem install --no-user-install  lt gem-name gt    will install your gem globally  i e  it will be available to all user s contexts

User · Answer

Contrary to all the other posts I suggest NOT using sudo when installing gems   Instead I recommend you install RVM and start a happy life with portable gem homes and different version of Ruby all living under one roof   For the uninitiated  from the documentation      RVM is a command line tool which allows us to easily install  manage and work with multiple ruby environments and sets of gems    The reason why installing gems with sudo is worse than just gem install is because it installs the gems for ALL USERS as root   This might be fine if you re the only person using the machine  but if you re not it can cause weirdness   If you decide you want to blow away all your gems and start again it s much easier  and safer  to do so as a non-root user    If you decide you want to use RVM then using sudo will cause all kinds of weirdness because each Ruby version you install through RVM has its own GEM HOME   Also  it s nice if you can make your development environment as close to your production environment as possible  and in production you ll most likely install gems as a non-root user

User · Answer

In case you   installed ruby gems with sudo want to install gems without sudo  don t want to install rvm rbenv   add the following to your  bash profile    export GEM HOME  Users    your user     gem export PATH   GEM HOME bin  PATH    Open a new tab in Terminal OR source    bash profile and you re good to go

User · Answer

Installing Ruby gems on a Mac is a common source of confusion and frustration  Unfortunately  most solutions are incomplete  outdated  and provide bad advice  I m glad the accepted answer here says to NOT use sudo  which you should never need to do  especially if you don t understand what it does  While I used RVM years ago  I would recommend chruby in 2020  Some of the other answers here provide alternative options for installing gems  but they don t mention the limitations of those solutions  What s missing is an explanation and comparison of the various options and why you might choose one over the other  I ve attempted to cover most common scenarios in my definitive guide to installing Ruby gems on a Mac

User · Answer

You can also install gems in your local environment  without sudo  with  gem install --user-install  lt gemname gt    I recommend that so you don t mess with your system-level configuration even if it s a single-user computer    You can check where the gems go by looking at gempaths with gem environment  In my case it s     gem ruby 1 8    If you need some binaries from local installs added to your path  you can add something to your bashrc like   if which ruby  gt  dev null  amp  amp  which gem  gt  dev null  then     PATH    ruby -r rubygems -e  puts Gem user dir   bin  PATH  fi    from http   guides rubygems org faqs  user-install

User · Answer

Better yet  put --user-install in your    gemrc file so you don t have to type it every time  gem  --user-install

[ruby-on-rails] 'sudo gem install' or 'gem install' and gem locations

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