rubyonrailsblog

  # Install rbenv $ brew install rbenv # Completely uninstall rbenv $ brew uninstall rbenv # list all available versions $ rbenv install -l # install a specific Ruby version $ rbenv install 2.3.0 # Sets a local application-specific Ruby version # by writing the version name to a `.ruby-version` $ rbenv local 2.2.2 # Sets the global version of Ruby to be used in all shells # by writing the version name to the `~/.rbenv/version` file $ rbenv global 2.2.1 # Sets a shell-specific Ruby version by setting the # RBENV_VERSION environment variable in your shell. $ rbenv shell 2.2.1 # Lists all Ruby versions known to rbenv $ rbenv versions # Displays the currently active Ruby versions $ rbenv version # Run this command after you install a new version of Ruby, # or install a gem that provides commands. $ rbenv rehash # Displays the full path to the executable that rbenv will # invoke when you run the given command $ rbenv which irb

  sudo apt install curl curl -sL https: //deb.nodesource.com/setup_12.x | sudo -E bash - curl -sS https: //dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add - echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list sudo apt-get update sudo apt-get install git-core zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev software-properties-common libffi-dev nodejs yarn sudo apt-get install libgdbm-dev libncurses5-dev automake libtool bison libffi-dev gpg --keyserver hkp: //keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB Got this error: gpg: keyserver receive failed: Server indicated a failure -------------------------------------------------------------------------------------------------- Then run for this command:  curl -sSL https: //get.rvm.io | bash -s stable then got this error: Downl...