红宝石在Ubuntu的轨道上

Question

I just got ubuntu installed recently and I'm trying to get ruby on rails up and running. I'm working through this tutorial - http://ruby.railstutorial.org/ruby-o...c-introduction

When I run $ rails -v or $ rails new first_app I get the following error...

The program 'rails' can be found in the following packages: *rails *ruby-railties-3.2 Try: sudo apt-get install

Being new to both ubuntu and rails, I'm not sure what to do here. Any suggestions? Thanks.

Answer 1

Best way to install ruby, rails etc is through RVM. Follow the following links. They'll guide you through.

http://www.unfoldingcode.com/2011/05/using-rvm-to-install-rails-31-on-ubuntu.html http://siliconchaos.com/2011/07/installing-rails-with-rvm/

Answer 2

Following are the steps to setup Ruby on rails on Ubuntu:

1. you need to import the RVM GPG Key:

gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3

2. Then install RVM

curl -sSL https://get.rvm.io | bash -s stable

3. load the RVM script

source ~/.rvm/scripts/rvm

Following are the steps to create new rails app:

1. rails new demo 
2. cd demo
3. rake db:create
4. rails server

Answer 3

Try this link. Explained all three ways to install Ruby ( RVM, rbenv and through source) and to setup rails for latest versions of ubuntu separately including DB setup ( MySQL and Postgres).

https://gorails.com/setup/ubuntu/17.04