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Setup Ubuntu 16.04 Xenial Xerus Discussion

General • Asked by Chris Oliver

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

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Looks like that I'm wrong... DSA is being deprecated now (I think)...

Some insights:

https://security.stackexcha...


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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!

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Whoops, just updated that. Hard to keep all these dang version numbers up to date.

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pg gem looks broken on xenial


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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"?

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did you get any solution for that?


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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' >"


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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.)

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The main reason not to use that is because you can update Ruby versions independently of the packages. Ruby 2.3 will get patches, 2.4 will come out, etc and you may have older apps that use 1.9 for example. All those would be easily managed with a version manager like rbenv and you can install it without waiting for the package maintainers to update it.


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

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Nope, just overlooked that! :)


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You got great article!

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

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Check out the deploy tutorial! :) https://gorails.com/deploy/...

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Awesome, Thanks for quick reply!


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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.

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That's where Chef, Ansible, etc come into play. :)


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Thank you very helpful


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


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

May help somebody.

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I solved this problem with the two commands bellow:
1) eval `ssh-agent -c`
2) ssh-add


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Just curious, why not default to `rvm` ?

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not sure, but rvm did work for me a few different times, but every time i have tried rbenv it has worked.

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not remembering which ones exactly, but rbenv have had very serious updates problems 6 month ago or something; "accidentally"upgrading it just broke people install at the time and you pretty much had to switch to rvm. A move that could become hellish if you had installed passenger though rbenv (:

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Yeah the fun install ror on linux is about as awesome as installing wireless drivers in the old days.

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humm, it was very true some years ago. rvm's always been stable since it exists; but rbenv introduced a fat doubt when their update failed


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


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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 ?


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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?

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I figured out what I did wrong. I was trying to install Xenial package instead of Trusty package.
Thanks.

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Joseph Bou Saada

can u explain more. I am having same issue

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Joseph, whatch out the version you're trying to install. This version has to be the as your Ubuntu version (Ubuntu 16 = Xenial and 14 = Trusty). Got it?


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


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Epic. Many thanks.


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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.

[email protected]:~/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.

[email protected]:~/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.


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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.


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Hey all, I'm having trouble with installing rails. I followed all of the steps (including "rbenv rehash") but when I try "rails -v" I don't get any message. I've uninstalled using "gem uninstall rails -v 4.2.6" multiple times and re-installed but it didn't help. I eventually just moved onto postgresql which seemed to work fine but when I get to the final steps the "rails new myapp -d postgresql" doesn't seem to do anything. Any help is appreciated!


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Best tutorial I have ever seen. I've tried to install Ruby and Rails on Windows and that was a nightmare) Development server was very slow. Later on I have Kubuntu installed and faced a problem installing rails via RVM. Luckily I found this tutorial! It's great, because this article covers a lot of ways to install rails on linux. Thank you very much!


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thanks for this. very helpful


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Thanks a lot for this. Its running like a charm.


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Help - I'm setting up ruby for first time. I'm using rbenv.
I wrote this in shell -

echo 'export PATH="$HOME/.rbenv/plugins/ruby-build/bin:$PATH"' >> ~/.bashrc
and when I write exec $SHELL. It throws an error like - exec $SHELL unexpected EOF while looking for matching `"' syntax error: unexpected end of file .


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Hello Chris,

I'm new to rails using zsh (oh-my-zsh) and can't get to work the rails command in the terminal. Upon executing the commands in your tutorial, I replace .bashrc with .zshrc

echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.zshrc
echo 'eval "$(rbenv init -)"' >> ~/.zshrc
echo 'export PATH="$HOME/.rbenv/plugins/ruby-build/bin:$PATH"' >> ~/.zshrc

Any idea with this? Thanks!


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Same problem here.

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Double check that your ~/.bashrc has the rbenv lines in it. This happens when bash doesn't properly load rbenv, and that happens because it doesn't add it to the path in your ~/.bashrc.

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Don't know does it help to rbenv users but this hint helped me:

https://rvm.io/integration/...
The trick is to configure terminal to login as login shell.


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Just a short note. If you receive an error message regarding the YAML syntax when running rake db:create, make sure that you dont have any exclamation marks in you password. If so, just put the entire password between quotation marks.


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Ran these tonight on a Digital Ocean droplet. Went off without a hitch. Thanks!

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Awesome to hear! :)


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Hi, I am stuck at the Github step. I created the key fine and pasted it but when I run 'cat ~/.ssh/id_rsa.pub' it says 'cat: /home/austin/.ssh/id_rsa.pub: No such file or directory'

I have minimal background in Linux and this is my first time installing ROR. I tried Googling some solutions but had no luck. Any ideas?

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Do I need the Github step?

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Austin, I am having this same result with `cat ~/.ssh/id_rsa.pub` - Ubuntu 16.04... not sure what to do to resolve this either

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when the terminal ask you "Enter file in which to save the key (/home/user/.ssh/id_rsa): rsa" you normally give a name for the file with the key.

just try next command this way :

$ cat "the_name_of_the_file" (because it's saved in the current (home) directory.

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Thank Mickaelmgd. When prompted for a filename, I left it blank and hit enter and everything worked as described after that.


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git clone https://github.com/rbenv/ru... ~/.rbenv/plugins/ruby-build
After typing my username (email) and password I get the error "remote: repository not found".


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Can anybody help me as i want to install Homebrew and ruby on rails on my Macbook OSX 10.8.5 2 months back i still could install homebrew but now it gives the following error.

Last login: Sat Oct 29 15:02:30 on ttys000

mrrobotas-MacBook-Pro:~ mrrobota$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubuserconte..."

curl: (22) The requested URL returned error: 404

mrrobotas-MacBook-Pro:~ mrrobota$


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This guide is something that would have solved all my problems as I started getting into Rails development. I'll be recommending it to people getting started. Thanks for taking the time to prepare it.

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Thanks Matt! That means a lot. :D


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Perfect...
All directions are clear :)


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The ~/.rvm/scripts/rvm didnt work for me, it was source /usr/local/rvm/scripts/rvm


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Thanks. Didn't have a problem installing ruby on rails on Ubuntu 16.04. Great Job


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Hi All,
Any help would be greatly appreciated, Using MySQL and everything went perfect until the end command, rake db:create then i received the below any idea?
rake db:create
(in /home/gary/myapp)
rake aborted!
LoadError: cannot load such file -- bundler/setup
/home/gary/myapp/config/boot.rb:3:in `<top (required)="">'
/home/gary/myapp/config/application.rb:1:in `<top (required)="">'
/home/gary/myapp/Rakefile:4:in `<top (required)="">'
(See full trace by running task with --trace)


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Yes, ran it again and then ran "rake db:create" received the same error, BTW thank you for answering!


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Edy Ken Kiptoo Khanali

help out .. i got this error ..

Expected string default value for '--rc'; got false (boolean)


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It's my favorite guide to use install RoR. Thaks!


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Just ran everything perfectly. Now I just need to learn how to use Rails.


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There are so many coding tutorials out there with missing bits, or bits that half-work. Everything here worked first time. Good job!


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Muhammed Rajeef M K

In case anybody is stuck at rake db:create,

Make sure Inside your databse.yml file, under default: you have the following ( right below pool)

host: localhost
username : your username
password : user's password


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When I run "rails server" i see below stuff and doesnt seem to start listening in localhost:3000
Any ideas?
https://uploads.disquscdn.c...


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Whenever I use the rails server command or ANY command, I get this - a deprecated warning, what do I do with this? Any way to fix it? And also, how do we uninstall rails if I used rbenv?

[email protected]:~/Desktop/Web/Rails/myapp$ rails server
/home/username/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-5.0.1/lib/active_support/xml_mini.rb:51: warning: constant ::Fixnum is deprecated
/home/username/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-5.0.1/lib/active_support/xml_mini.rb:52: warning: constant ::Bignum is deprecated
=> Booting Puma
=> Rails 5.0.1 application starting in development on http://localhost:3000
=> Run `rails server -h` for more startup options
/home/username/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-5.0.1/lib/active_support/core_ext/numeric/conversions.rb:138: warning: constant ::Fixnum is deprecated
Puma starting in single mode...
* Version 3.7.0 (ruby 2.4.0-p0), codename: Snowy Sagebrush
* Min threads: 5, max threads: 5
* Environment: development
* Listening on tcp://0.0.0.0:3000
Use Ctrl-C to stop

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It is solved in Rails 5.0.2


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warning: constant ::Fixnum is deprecated
warning: constant ::Bignum is deprecated

i am getting these errors while executing rake command stackoverflow thread said this is the problem with ruby 2.4.0 can may i know how to downgrade my ruby gem


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thanks, this was useful!


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First of all: Great Guide!
Ive got a little different question going to PageFlow. As this is the best Rails/RoR guide ive found and pretty lost right now i thought i could give it a try here:
I followed every step described here, installed ruby 2.3.1p112 and rails 4.2.7.1
as i try running rails generate pageflow:install i get following error message:
/home/pageflow/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/pageflow-0.11.3/lib/pageflow/global_config_api.rb:17:in `config': Pageflow has not been configured yet (RuntimeError)

since my ruby know how is === 0 maybe one of you ran into the same problem or knows how to solve it? https://uploads.disquscdn.c...

Best regards,
Ronald


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Great article, really helped a lot in installing ruby on rails and starting my first application.


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/etc/nginx/sites-enabled/default is not available for me


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Hey Chris, this was great for a beginner like me. Though, the only problem I had was with creating a new user for the postgres database as I get "could not change directory to "/home/whoarse": Permission denied". Not sure where to start with this??


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Hey Chris, this was great for a beginner like me. Though, the only problem I had was with creating a new user for the postgres database as I get "could not change directory "/home/whaorse": Permission denied". Not sure where to start with this??


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Err:10 http://ppa.launchpad.net/fo... xenial/main amd64 Packages
404 Not Found
Ign:12 http://ppa.launchpad.net/fo... xenial/main i386 Packages
Ign:13 http://ppa.launchpad.net/fo... xenial/main all Packages
Ign:15 http://ppa.launchpad.net/fo... xenial/main Translation-en_IN
Ign:16 http://ppa.launchpad.net/fo... xenial/main Translation-en
Ign:17 http://ppa.launchpad.net/fo... xenial/main amd64 DEP-11 Metadata
Ign:18 http://ppa.launchpad.net/fo... xenial/main DEP-11 64x64 Icons
Err:20 http://ppa.launchpad.net/li... xenial/main amd64 Packages
404 Not Found


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thanks


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Ernesto Almeda (MTGONS5)

Probably the easiest Setup I've came across. Good Job!


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I would recommend also installing ruby-dev:
`sudo apt-get install ruby-dev`


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This has solved my current installation problem and some that I would have definitely run into.
Thanks Chris.


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Tried for two full nights to install rails on Ubuntu, this is the first site to explain step by step, so a HUGE Thank You! I'm now on my way up the learning curve.


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Why this way and not taking the packages from repositories? Is it due old versions and incompatibilities?

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Usually the distros...
1) doesn`t have an updated version of ruby.
2) installs a system wide ruby. So, for an user to install a gem he would need sudo and also there wouldn`t have gem set isolation.
3) from 2), there is no version management, like rbenv and rvm.


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Icing on the cake:
echo 'gem: --no-rdoc --no-ri' >> ~/.gemrc
gem install pry && echo 'alias irb=pry' >> ~/.bashrc

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Disabling rdoc, to avoid compilation error on low memory machines: 
CONFIGURE_OPTS="--disable-install-rdoc" 
before rbenv install

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Dude. Epic. But you got me there. Thanks a mill.


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Kleberson do Rego Lima

Excellent tutorial! Thank you Chris!


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Such a nice tutorial bro....Great


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Thank you, I was very worried installing it on ubuntu, your tutorial was so beginner friendly.


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This is the best Rails installation tutorial. Thanks man.


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Congrats for this nice article!!!


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Very helpful, thanks. But I got a failure on Ubuntu 16.04.2 when it runs oracle-java7-installer. I already have Java8 installed. Here's the error messages:

=========================
[email protected]:~$ sudo apt-get install git-core curl zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev python-software-properties libffi-dev nodejs
... (bunch of installs that work, then ...) ...
Setting up oracle-java7-installer (7u80+7u60arm-0~webupd8~1) ...
Downloading Oracle Java 7...
--2017-08-08 14:38:03-- http://download.oracle.com/...
Resolving download.oracle.com (download.oracle.com)... 104.107.60.99, 104.107.61.90
Connecting to download.oracle.com (download.oracle.com)|104.107.60.99|:80... connected.
HTTP request sent, awaiting response... 302 Moved Temporarily
Location: https://edelivery.oracle.co... [following]
--2017-08-08 14:38:03-- https://edelivery.oracle.co...
Resolving edelivery.oracle.com (edelivery.oracle.com)... 2600:1407:21:28e::2d3e, 2600:1407:21:2ae::2d3e, 23.194.90.202
Connecting to edelivery.oracle.com (edelivery.oracle.com)|2600:1407:21:28e::2d3e|:443... connected.
HTTP request sent, awaiting response... 302 Moved Temporarily
Location: http://download.oracle.com/... [following]
--2017-08-08 14:38:03-- http://download.oracle.com/...
Connecting to download.oracle.com (download.oracle.com)|104.107.60.99|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2017-08-08 14:38:04 ERROR 404: Not Found.

download failed
Oracle JDK 7 is NOT installed.
dpkg: error processing package oracle-java7-installer (--configure):
subprocess installed post-installation script returned error exit status 1
... (more installs that work) ...
update-alternatives: using /usr/bin/nodejs to provide /usr/bin/js (js) in auto mode
Processing triggers for libc-bin (2.23-0ubuntu9) ...
Errors were encountered while processing:
oracle-java7-installer
E: Sub-process /usr/bin/dpkg returned an error code (1)

[email protected]:~$ java -version
java version "1.8.0_144"
Java(TM) SE Runtime Environment (build 1.8.0_144-b01)
Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed mode)
========================

Help?


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i have got problem in setting up sql.. it says E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). would you please tell me the solution


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https://uploads.disquscdn.c...

followed your tutorial and steps were smooth unexpected! :D thanks much!


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in my pc while installing rails ial getting this error:
ERROR: Loading command: install (LoadError)
cannot load such file -- zlib
ERROR: While executing gem ... (NoMethodError)
undefined method `invoke_with_build_args' for nil:NilClass

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somebody help me please...

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Yaroslav Beskhlebnyi

gem install bundler


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MIGUEL ANGEL GIL RODRIGUEZ

hello a question I have my project rvm 2.3.1 and rails 5.1.1 which version should I install, thanks


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Thanks for clear road. Before, I tried to install with other guides but couldn't successful. With you, it was not only easy also was pleasure. Now all running. Really thanks.


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Thank you so much for this, it was awesome and extremely helpful. One suggestion to help out the impatient (such as myself). Use '--verbose' with the installs where applicable; makes it much easier to know that it's actually working.


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The official rvm is recommnded to be installed by using this repo: https://github.com/rvm/ubun...


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hai ,very good blog ..i have a doubt when we install mysql in root and one more command that u r using...sudo apt-get install mysql-server mysql-client libmysqlclient-dev... in u r blog its giving some problem ....then how to create database and create a table and link to a html page and to get ouput on localhost:3000..if any blog u have created please
refer that


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excellent recipe !!


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i had error bundler: command not found: spring

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Hello,
I have install rails and  i want to use mysql for database.
i have install mysql but how can i see the database in browser.
like localhost/phpmyadmin

Thank You

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How it worked for me:

FYI: Instead of

sudo -u postgres createuser chris -s

I used:

sudo -i -u postgres createuser chris -s

Also, in the config/database.yml file, under pool:5, add

  host: localhost
  username: pguser
  password: pguser_password

(pguser) + (pguser_password) is the username and password you created. Also add this to the "test" envrionment section.

And finally if rails server doesn't work, if you're using a Virtual Server like Digital Ocean, use:

rails server --binding=server_public_IP

where (server_public_IP) is the server's IP address. Then use http://server_public_IP:3000 in your web browser.


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