I already have installed ruby 2.3.1p112 and rails 5.0.0 but I need install another version of ruby and rails, so I will install rbenv. What the right path to follow ? Do I need remove ruby and rails before install rbenv ?
as part of the installation you will add stuff to your bash profile which will clobber the system ruby / gem environment. You shouldn't have to do anything, just proceed with the rbenv install documentation.
Related
I'm having trouble updating ruby and rails on my Ubuntu system.
rails --version
Rails 4.1.7
ruby --version
ruby 2.1.3p242 (2014-09-19 revision 47630) [x86_64-linux]
Originally I was using rbenv but I want to switch to RVM as I am not very experienced. I've used sudo apt-get remove on rbenv, ruby, and rails but even after that the versions above do not go away. rbenv aparently exists still as well.
rbenv --version
rbenv 0.4.0-129-g7e0e85b
Installing RVM after quote on quote removing rbenv does not change the versions above either.
These uninstallation instructions may be helpful to you if you're having trouble. In brief, run rm -rf ~/.rbenv and then remove anything rbenv added to your startup files. Note that if you installed rbenv using the instructions on the GitHub page (i.e. cloning the Git repo), you won't be able to uninstall it (or Rails, Ruby, etc., since those are presumably stored in your .rbenv directory) with apt-get.
If you want to keep using rbenv and upgrade to the latest version of Ruby and Rails, I suggest installing ruby-build if you haven't already, then running rbenv install 2.2.1, followed by rbenv global 2.2.1, followed by gem install rails. Check out the local/global stuff in the "Command Reference" section of the rbenv documentation for more information on selecting which version of Ruby you want to use.
I'm trying to install Ruby + Rails on Ubuntu 14.04. I need more than one user to have access to Ruby, so I installed rbenv with ruby-build in the /opt/.rbenv directory. Is that right?
If I try to install a version of Ruby using
rbenv install 2.1.3
it is installed in ~/username/.rbenv/versions, not in /opt/.rbenv/versions.
I don't want to give the second user access to the other user's home directory.
How can I install Ruby in /opt/.rbenv? Or is there another solution?
You can use the RBENV_ROOT environment variable:
sudo RBENV_ROOT=/opt/.rbenv rbenv install 2.1.3
See documentation.
I'm desperate, please help. I can't figure out how to change Ruby on Rails to run with 2.0.0, even though I think I've done everything to set 2.0.0 as the default, and rvm -list doesn't even show 1.8.7 as an option. I don't know what files I need to move/what pathways I need to change, and my attempts to uninstall rails have been unsuccessful as there's a "missingBundle" error.
$ ruby - v
returns ruby 2.0.0p247
$ rvm--default use 2.0.0
Using /Users/ericafischer-colbrie/.rvm/gems/ruby-2.0.0-p247
Then,
$ rails -s
Rails prefers to run ruby 2.0. You're running ruby 1.8.7 (2012-02-08 patchlevel 358)
[universal-darwin12.0]. Please upgrade to Ruby 1.9.3 or new to continue.
I've spent a lot of time looking at similar questions posted on stackoverflow and those solutions so far have not yielded any results.
Since you're using rvm, make sure you create a gemset and ruby-version file and install the version of rails you want to use.
E.g inside you're working dir tell rvm which ruby to use, which gemset to use, create both a gemset and ruby-version file:
rvm use ruby-2.0.0#my_cool_project --ruby-version --create
Then
gem install rails
To check run which ruby in that directory to make sure it's ruby 2 - - which rails will show you that it's using the gem of rails inside the ruby 2 my cool project gemset. Should be ok
Looks like you may have used something like sudo gem install rails.
When installing gems, you want to be sure to not use the sudo command.
Try sudo gem uninstall rails; rvm use ruby-2.0.0#myapp --create; gem install rails
Install rvm in your Macintosh
Then do rvm install 2.0.0 or rvm install version(whatever version you need)
Where ever you need a particular version of Ruby(say 2.0.0), do rvm use 2.0.0 and whichever version you need you can switch similarly.
If you are not sure how to install rvm or stuck with something else. Please see link for detailed explanation.
Updated, thanks #Momer.
I had already installed rails 1.8.7, forgot about it, then installed 1.9.3 through RVM. I was getting weird errors, so I purged my Mac of the system version of Ruby and started again using RVM. So far I've
Installed Ruby:
rvm reinstall 1.9.3-p0
which ruby
/Users/User/.rvm/rubies/ruby-1.9.3-p0/bin/ruby
Manually setup Rubygems
which gem
/Users/User/.rvm/rubies/ruby-1.9.3-p0/bin/gem
Tried to install rails
sudo gem install rails
Successfully installed rails-3.2.1
1 gem installed
gem list
rails (3.2.1, 3.2.0)
It says rails is installed, but which gem does not work, and when I try to use rails new I get:
-bash: rails: command not found
I'm definitely missing something here. The only explanation I can think of is that there are remnants of a previous ruby or rails install that's causing problems. Is there a way to start completely from scratch?
If you are using RVM, you should not use "sudo" when you install gems. That will install gems to your system ruby version (not on the RVM rubies).
First, set up default rvm ruby like
rvm use ruby-1.9.3-p0 --default
Then, install rails on it by running:
gem install rails -v=3.2.1
It's actually better to use gemsets so you can have different gems set for the same ruby version. Check here for more info.
I'm going through the rails by example tutorial.
Its seems that every time I close terminal rails defaults back to 2.3.5 & I have to go through the process of installing 3.0.3 every time I open the terminal?
I installed rails using: $ [sudo] gem install rails --version 3.0.3
Has anyone experienced a similar issue? I've tried googling around and searching stack to no avail.
The problem is almost-assuredly RVM interpreting 2.3.5 as your default rails version in your default gem set. I ran into this problem myself when first experimenting with RVM. Try this:
rvm --default use 1.9.2 (or whatever you want your default ruby interpreter to be)
rvm gemset create rails-3.0.3
rvm use 1.9.2#arails-3.0.3 --default
gem install rails
That will:
Set your default ruby interpreter to the desired ruby version
Create a gemset for your Rails 3.0.3 install and make it your default gemset
Install rails
Once you close the terminal and open it back up, it'll load RVM's defaults, putting you back on Rails 3.0.3 again.
Try uninstalling the rails gem:
gem uninstall rails
If you are prompted to select a version, select 2.3.5 and leave the 3.0.3 version intact.
P.S: Are you using RVM? If not, I would highly recommend it.
I've had this problem using RVM, if you're using RVM do: $rvm 1.9.2 (or whatever ruby version you installed the rails 3 gem with).
Check the output of $ ruby -v when you seem to have access to rails3 and again $ ruby -v when you can only seem to get to v2.3.5. If it shows different versions of ruby then you most likley are using RVM.
#Ads If youre using RVM and you install rails using sudo like so
$ [sudo] gem install rails --version 3.0.3
youre doing it wrong. RVM depends on you using a ruby distro that was installed by RVM into your user directory. If youre using sudo, youre installing rails gem into your system-wide ruby.
So check that youre using the right ruby version by doing 'rvm info' and then do your 'gem install rails --version 3.0.3' without sudo