Don't use "ssh-keygen -t rsa", use "-t dsa", much safer and not owned by NSA.... ;-)

PostgreSQL is now upto 9.5.2 and yet this recommends 9.3.x. Is there something actively wrong with the version in the standard Ubuntu repositories; that prompts you to go back to the PostgreSQL repositories?

Given all the JSONB goodness that arrived with 9.4.x and was enhanced with 9.5.x; this is a surprise! Am slightly puzzled and very keen to lay hands on JSONB.

Also grateful for this site and these pages especially!

Sorry I am very new to rails development, when creating an user in postgresql I get a not connected to database error...

could not change directory to "/home/jie": Permission denied
createuser: could not connect to database postgres: could not connect to server: No such file or directory
Is the server running locally and accepting
connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?

Instead of this "sudo sh -c "echo 'deb http://apt.postgresql.org/p... precise-pgdg main' >", Do "sudo sh -c "echo 'deb http://apt.postgresql.org/p... xenial-pgdg main' >"

Ubuntu 16.04 has Ruby 2.3 in its package repository, as "ruby-full". Is there any point these days not to use that? Even if you want to use rbenv, you can still mix user gems and system ruby. (Note noobs: even though all guides seem to advise you to use rbenv or rvm, it can be more trouble than it's worth, especially on a single-user system.)

You have the installing NodeJS twice. Once right after rbenv/rvm and once right before installing Rails. Is there a reason for that?

You got great article!

Would you be able to demonstrate the same for Production Environment ? and the best practices for production ?

If I want to automate the entire set of tasks in one script and call that at command line and sit back and watch it all happen, how do I do that? Right now I am cutting and pasting lines.

Thank you very helpful

thanks man... this help-me a lot!

Git connection was refusing until I ran ssh-add ~/.ssh/id_rsa and it worked.

May help somebody.

great!

Just curious, why not default to `rvm` ?

Greate article, I always forget setting up the postgres user.

rbenv install 2.3.1

Downloading ruby-2.3.1.tar.bz2...

-> https://cache.ruby-lang.org...

error: failed to download ruby-2.3.1.tar.bz2

BUILD FAILED (Ubuntu 16.04 using ruby-build 20160426-22-g3dbbf90)

can you help me in this ?

When I run

sudo apt-get install postgresql-common

I got this error:
The following packages have unmet dependencies:
postgresql-common : Depends: init-system-helpers (>= 1.18~) but 1.14 is to be installed
E: Unable to correct problems, you have held broken packages.

Believe me, neither stackoverflow was able to help me with thie error.

Anyone can help?

Thank that all work for me.
i must learn ruby now.!

Epic. Many thanks.

I'm going into the last step rake db:create but i've got an error, it says that i have to install debug_inspector - v '0.0.2' but still ive got an error, please help me, what i supposed to do? thank you.

cahyaef@Lumos:~/myapp$ rake db:create
Could not find gem 'rails (= 4.2.6)' in any of the gem sources listed in your Gemfile or available on this machine.
Run `bundle install` to install missing gems.

cahyaef@Lumos:~/myapp$ bundle install
Fetching gem metadata from https://rubygems.org/
Fetching version metadata from https://rubygems.org/
Fetching dependency metadata from https://rubygems.org/
Resolving dependencies.............................................
Using rake 11.2.2
Using i18n 0.7.0
Using json 1.8.3
Using minitest 5.9.0
Using thread_safe 0.3.5
Using builder 3.2.2
Using erubis 2.7.0
Using mini_portile2 2.1.0
Using pkg-config 1.1.7
Using rack 1.6.4
Using mime-types-data 3.2016.0521
Using arel 6.0.3
Installing debug_inspector 0.0.2 with native extensions

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

current directory: /tmp/bundler20160625-27921-19vrn9zdebug_inspector-0.0.2/gems/debug_inspector-0.0.2/ext/debug_inspector
/usr/bin/ruby2.3 -r ./siteconf20160625-27921-q4iq2t.rb extconf.rb
mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h

extconf failed, exit code 1

Gem files will remain installed in /tmp/bundler20160625-27921-19vrn9zdebug_inspector-0.0.2/gems/debug_inspector-0.0.2 for inspection.
Results logged to /tmp/bundler20160625-27921-19vrn9zdebug_inspector-0.0.2/extensions/x86-linux/2.3.0/debug_inspector-0.0.2/gem_make.out
Using bundler 1.12.5
Installing byebug 9.0.5 with native extensions

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

current directory: /tmp/bundler20160625-27921-1av67ezbyebug-9.0.5/gems/byebug-9.0.5/ext/byebug
/usr/bin/ruby2.3 -r ./siteconf20160625-27921-10vahzy.rb extconf.rb
mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h

extconf failed, exit code 1

Gem files will remain installed in /tmp/bundler20160625-27921-1av67ezbyebug-9.0.5/gems/byebug-9.0.5 for inspection.
Results logged to /tmp/bundler20160625-27921-1av67ezbyebug-9.0.5/extensions/x86-linux/2.3.0/byebug-9.0.5/gem_make.out
Using coffee-script-source 1.10.0
Using execjs 2.7.0
Using thor 0.19.1
Using concurrent-ruby 1.0.2
Using multi_json 1.12.1
Installing pg 0.18.4 with native extensions

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

current directory: /tmp/bundler20160625-27921-6wnv2wpg-0.18.4/gems/pg-0.18.4/ext
/usr/bin/ruby2.3 -r ./siteconf20160625-27921-1hfbrz5.rb extconf.rb
mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h

extconf failed, exit code 1

Gem files will remain installed in /tmp/bundler20160625-27921-6wnv2wpg-0.18.4/gems/pg-0.18.4 for inspection.
Results logged to /tmp/bundler20160625-27921-6wnv2wpg-0.18.4/extensions/x86-linux/2.3.0/pg-0.18.4/gem_make.out
Using sass 3.4.22
Using tilt 2.0.5
Using spring 1.7.1
Using rdoc 4.2.2
Using tzinfo 1.2.2
Installing nokogiri 1.6.8 with native extensions

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

current directory: /tmp/bundler20160625-27921-fzg6wvnokogiri-1.6.8/gems/nokogiri-1.6.8/ext/nokogiri
/usr/bin/ruby2.3 -r ./siteconf20160625-27921-131um77.rb extconf.rb
mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h

extconf failed, exit code 1

Gem files will remain installed in /tmp/bundler20160625-27921-fzg6wvnokogiri-1.6.8/gems/nokogiri-1.6.8 for inspection.
Results logged to /tmp/bundler20160625-27921-fzg6wvnokogiri-1.6.8/extensions/x86-linux/2.3.0/nokogiri-1.6.8/gem_make.out
Using rack-test 0.6.3
Using mime-types 3.1
An error occurred while installing debug_inspector (0.0.2), and Bundler cannot
continue.
Make sure that `gem install debug_inspector -v '0.0.2'` succeeds before
bundling.

Chris, as a subscriber, I've gotten a lot of tips from you, now here's one from me:
It should be "without further ado", not "adieu." The former means fuss and bother, the latter means goodbye. The are homonyms.