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.
Related
I had the original ruby v2.6.8 I believe on my mac os. I wanted to upgrade to ruby 3.1.2 to get access to rails.
I installed ruby via homebrew, however I decided it woud be easier to manage using rbenv. I went to uninstall ruby via homebrew, and then instaled ruby 3.1.2 with rbenv.
Now when I use the
ruby -v
-bash: /usr/local/opt/ruby/bin/ruby: No such file or directory
using the command which ruby brings me this:
/Users/user/.rbenv/shims/ruby
So the ruby is there, and rbenv claims it installed ruby 3.1.2, but did homebrew install all of ruby including the version osx came with? Im pretty sure thats a yikes moment if it did. I also can't use any ruby commands under these circumstances so I don't really know what to do from here?
How do I get my $PATH to recognize the rbenv path to ruby as the global path? I'm on MacOs 11.3.1 BigSur if thats relevant.
Follow the next steps to set up rbenv, and ruby 3.1.2.
Step 1
brew install rbenv
Step 2 Add the following lines to your .zshrc file
export PATH="$HOME/.rbenv/bin:$PATH"
eval "$(rbenv init - zsh)"
Step 3
brew update && brew upgrade ruby-build
Step 4
rbenv install 3.1.2
rbenv global 3.1.2
I have installed RVM successfully on my Mac and using it I have installed Ruby 2.6.3. I have set my current and default version of Ruby to be 2.6.3. Everything seems to be fine because when I enter ruby -v into the terminal it tells me I'm using ruby 2.6.3.
My problem comes when I try to install Rails 6, I'm entering:
gem install rails --version=6.0.0 -no-ri -no-rdoc
It seems to install correctly however when I try to confirm with:
rails -v
I get:
Rails 6 requires Ruby 2.5.0 or newer.
You're running
ruby 2.3.7p456 (2018-03-28 revision 63024) [universal.x86_64- darwin18]
Please upgrade to Ruby 2.5.0 or newer to continue.
Why am I getting this message when my ruby -v command is telling me that I am using ruby 2.6.3
Any help would be very welcome.
You're running ruby 2.3.7p456. You need to set your local ruby version to 2.6.3.
Try which ruby to see which ruby version is loaded.
rvm install 2.6.3
rvm use 2.6.3
You can then see which ruby is running with which ruby.
See the basics on the rvm docs
As an aside, I also recommend recommend rbenv over rvm; however, you can only have one installed. If you have both installed, you're going to have a bad time.
To make sure you do not have both installed try which rbenv, and that should return rbenv not found
Please edit your original question with the output of the following commands:
which -a ruby
echo $PATH (That will help debug if your $PATH is set up incorrectly.)
which rbenv
ls (in your project directory)
i also had the similar problem which i resolved by uninstalling rvm completely and then installing rbenv.
I've read similar questions but still unlucky. In my server (Ubuntu 16.04) I have two user: root and other. I want to config a Rails project.
Now, after some configuration I installed the v2.5 version of Ruby (required) as a root user using Rbenv, but in the other profile the version kept the same as default (v2.3).
I've managed to know set the proper version in the other profile. When I do:
rbenv versions
The output is the following:
system
* 2.5.0 (set by /home/other/.rbenv/version)
But when I do:
ruby -v
The version keeps being the default one:
ruby 2.3.1p112 (2016-04-26) [x86_64-linux-gnu]
How to set the version to v2.5?
Thanks in advance.
when you run ruby -v, it's considering your ruby installed by apt install ruby.
You must remove ruby-build with apt remove ruby-build and clone the ruby-build to inside rbenv directory and then install and set as global with rbenv.
I want to recommend you to read and follow this tutorial after remove local ruby-build.
I already have installed ruby 2.3.1p112 and rails 5.0.0 but I need install another version of ruby and rails, so I will install rbenv. What the right path to follow ? Do I need remove ruby and rails before install rbenv ?
as part of the installation you will add stuff to your bash profile which will clobber the system ruby / gem environment. You shouldn't have to do anything, just proceed with the rbenv install documentation.
Am trying to set up rails on mac using rbenv and Homebrew.
Currently getting the following message when attempting to 'gem install rails':
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /Library/Ruby/Gems/2.0.0 directory.
username-mbp:projects username$ gem install rails
Any ideas??
If you are using rbenv, you should not use sudo to install gems. rbenv very helpfully installs your gems under your home directory in a way that allows you to use different gems for each installed Ruby version. When you change versions of Ruby you will really appreciate this.
To see the current version of Ruby, use rbenv local. For me this prints:
2.2.2
To see all the Ruby versions on your system of which rbenv is aware:
rbenv versions
rbenv stores the version specifier in a file called .ruby-version. This allows you to use different versions of Ruby for different projects, each version having its own set of gems.
When you try to install rails and get the Gem::FilePermissionError, it means that rbenv is not active, or you are deliberately installing into the "system" Ruby. There is nothing wrong with this per se, but you are not taking advantage of rbenv.
I recommend installing Rails again, using rbenv local to ensure that you are adding the gems to the correct path. You'll know this is working when
gem env gemdir
produces something like:
/Users/username/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0
See https://github.com/sstephenson/rbenv#installation for more info.
This probably means that you used sudoat some point, which means that you run a command that allows you (as a permitted user to execute a command as the superuser or another user) See here: http://linux.about.com/od/commands/l/blcmdl8_sudo.htm.
Can you please paste the commands you used for installing rbenv, ruby, gem, brew, etc.? Also please paste the output of brew doctorto see if environment is correctly configured for Homebrew. Also, please paste the OSX version and rbenv versionsif rbenv is installed.
The steps for installing ruby on rails on OSX are:
Install Homebrew by:
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"`` (as seen here: http://brew.sh/). Run brew doctor and brew updateto see if everything is fine.
Install ruby: OS X comes with Ruby installed (Mavericks/Yosemite even gets version 2.0.0, previously it was only 1.8.7).
Install rbenv: it can be done either by GitHub Checkout or Brew. You probably should use brew. Run brew install rbenv ruby-build(this will also install ruby-build -https://github.com/sstephenson/ruby-build#readme-). You can also use this command brew install rbenv ruby-build rbenv-gem-rehash. Then echo 'eval "$(rbenv init -)"' >> ~/.bash_profile (to enable shims and autocompletion). You should problably run this too: echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile. Close terminal and open it again. Install the preferred version of ruby (if you want): rbenv install 2.0.0-p353.
Install Bundler: gem install bundler.
Install SQLite: gem install sqlite3
Install Rails: gem install rails.
So, the error you are having is due to permissions (you can understand about them here: http://www.tutorialspoint.com/unix/unix-file-permission.htm). Many people suggest fixing the issue with sudo or chown (http://www.cyberciti.biz/faq/how-to-use-chmod-and-chown-command/). I don't recommend that as it messes with system configuration. It will be better that you run:
rbenv install 2.1.2
rbenv global 2.1.2
gem update --system
When I run with this error like a year ago, what I did was uninstall everything and start again... but, probably that'll take too long.
These links might help you:
ruby for mac, ruby rbenv, rbenv githube, rubies and gems, question on stack
Use sudo:
sudo gem install rails
This guide helped me a lot: Setup Ruby On Rails on
Mac OS X 10.10 Yosemite