RVM

1. \curl -L https://get.rvm.io | bash -s stable - install stable version
2. Add to ~/.zshrc, ~/.bashrc:

   ~/.zshrc and ~/.bashrc

   export PATH=$PATH:$HOME/.rvm/bin # Add RVM to PATH for scripting
   [[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm" # Load RVM function
   [[ -r $HOME/.rvm/scripts/completion ]] && . $HOME/.rvm/scripts/completion

3. Logout/Login to complete the installation.

• rvm list - show currently installed rubies;
• rvm list known - show all known RVM installable Rubies;
• rvm gemset list - list installed gemsets for selected Ruby version;
• rvm info - show the current environment information for current ruby;
• rvm gemdir - gem directory of the currently selected ruby.

1. rvm install 1.9.3 --autolibs=read-only - install Ruby of specific version;
2. rvm gemset create rails3myproject - creates gemset with rails3myproject name;
3. rvm use 1.9.3@rails3myproject --default - use Ruby 1.9.3 with rails3myproject gemset for new shells;
4. rvm rubygems current or rvm rubygems latest - install the most recent RubyGems that RVM knows about;
5. rvm rubygems 1.8.29 - install version 1.8.29 of RubyGems;
6. gem install rails -v 3.2.15 - install specific rails in current gemset;
7. gem install bundler - install Bundler;
8. rvm use 1.9.3@rails3 --create --default - short way to create and use specific Ruby&Rails for current and new shells;
9. rvm wrapper ruby-name - create symlinks in ~/.rvm/bin for specific Ruby version;
10. rvm wrapper default --no-prefix - create symlinks in ~/.rvm/bin for default Ruby version.

• rvm get stable - update to the latest stable version

• rvm gemset delete rails2 - remove the entire gemset directory 'rails2';
• rvm rubygems remove - remove the different version installed of RubyGems;
• rvm uninstall 1.8.7 - uninstall Ruby-1.8.7 but keep sources;
• rvm remove 1.8.7 - uninstall Ruby-1.8.7 with sources.
• gem pristine charlock_holmes - removes charlock_holmes gem

• rvm reset - reboot RVM;
• rvm implode - fully remove RVM;
• rvm use system - use System's Ruby version;
• rvm gemset export - export gemset to default.gems;
• rvm gemset import default.gems - install gemset from default.gems list.

Create $project/.rvmrc file with rvm use RubyVersion@projectname for example rvm use 1.9.3@rails3.

Redmine installations:

command curl -sSL https://rvm.io/mpapis.asc | gpg2 --import -
command curl -sSL https://rvm.io/pkuczynski.asc | gpg2 --import -
curl -sSL https://get.rvm.io | bash -s stable
source ~/.rvm/scripts/rvm
rvm reload
rvm install 2.4.10 --autolibs=read-only # Redmine only
rvm use 2.4.10@global --create --default # Redmine only
gem uninstall bundler; gem install bundler # Temporary workaround: 1.12.3 requires to unlock nproc limits protection
rvm wrapper regenerate bundle # updates symlinks in ~/.rvm/bin
cd redmine
bundle update
bundle install --no-deployment --without development test # Redmine only
paxctl -m `which ruby` # Hardened Gentoo only

• RubyGems Bundler Integration.