I am trying to get the Rails tutorial by Michael Hartl going. I spent a lot of time fighting various libraries. So I removed all ruby software from my Ubuntu 10.4 system.
Then I installed Ruby 1.9.2.
$ ruby -v
ruby 1.9.2dev (2010-07-02) [i486-linux]
So far so good. Then I did
sudo gem install rails
After a long time, it finished the installation.
Then I ran
$ rails -v
bash: /usr/bin/rails: /usr/bin/ruby1.8: bad interpreter: No such file or directory
So...I have no /usr/bin/ruby1.8 on my system. How do I get Rails 3.0.3 to use my ruby at /usr/bin/ruby?
I appreciate any help you can give me.
Just to see if I could keep going, I tried
$ cd /usr/bin
$ sudo ln -s ruby1.9.2 ruby1.8
This let me keep going, but is it the right thing to do?
It took trying 3 different methods of installing and uninstalling Ruby, but I finally got it!
I found a great tutorial by Toran Billups which gives some great instructions. After analyzing what he did, it comes down to a few key concepts:
Some libraries that are independent of the Ruby version must be installed in the system (using "sudo apt-get").
Use RVM to install Ruby in your own account. i.e. no "sudo".
Use gem to install gems in your particular ruby environment. (i.e. no "sudo"). When you set 1.8 as the Ruby environment, the gems are installed in the RVM 1.8 tree in your environment. When you set 1.9.2 as the environment, gems are installed in the 1.9.2 tree in your environment.
Here, then, is the process.
Remove all Ruby programs (1.8.x and 1.9.2) and Ruby libraries from your Ubuntu 10.4 system.
Install RVM on your system, following the instructions at the RVM site(broken) RVM site.
Follow Toran Billups' tutorial, starting at the point where you install Ruby 1.8.7.
Follow the instructions at Michael Hartl's tutorial(broken) Michael Hartl's tutorial to get Rails 3.0 working with Ruby 1.9.2, github, heroku.com, rspec, spork, and autotest.
I had the same error after installing with RVM and opening new shells. The solution was to run:
$ rvm use 1.9.2 --default
P.S.
I'm running Ubuntu 10.04 and after two days of trial and error finally got rails 3 working with ruby 1.9.2. I highly recommend using RVM to install ruby a godsend!
By the sounds of it Bash is finding ruby1.8 when its running the #!/usr/bin/env ruby line from the rails script, even though it doesn't exist. Try /usr/bin/env which ruby to see exactly what interpreter it's trying to load.
I was also having a headache with this, and don't want to use RVM right now.
I saw that the shebang line for /usr/bin/gem was #!/usr/bin/ruby1.8 and that this was presumably the issue.
I made sure /etc/alternatives pointed to the correct gem script; this can be set with:
update-alternatives --config gem
Then I removed /usr/bin/gem and symlinked from /usr/bin/gem to /etc/alternatives/gem
It turns out the only difference in the gem scripts was the shebang line, so manually changing that would have worked too.
Solved by changing back the version of my current Ruby (using RVM) to 2.0.x.
When i installed rails (two days ago) it was under the 2.0.0 version. Yesterday i changed to 2.1.x. Today i tried the rails command and got the error.
So turning back to the RVM Ruby version i installed rails did the trick.
Sorry by the bad english.
P.S. Using Ubuntu 13.10
Related
I have been having some issues with my Ruby and Gem environments and wanted to clean them all out and start over. So I removed all my ruby's in rvm (rvm 1.13.8 (stable)) which left me with the stock Ruby 1.8.6 and Gem 1.0.1. I thought about removing these as well but everything I read said they should be fine. Anyway I went to install Ruby 2.0 but RVM has 1.9.3 as the most current and I was wondering if its because I am running 10.5.8 on a G4 MDD and if there is a possibility of being able to install it. My MacBook Pro running 10.8 was able to install it.
$ rvm list known
# MRI Rubies
[ruby-]1.8.6[-p420]
[ruby-]1.8.7[-p358]
[ruby-]1.8.7-head
[ruby-]1.9.1[-p431]
[ruby-]1.9.2-p180
[ruby-]1.9.2-p290
[ruby-]1.9.2-p318
[ruby-]1.9.2[-p320]
[ruby-]1.9.2-head
[ruby-]1.9.3-preview1
[ruby-]1.9.3-rc1
[ruby-]1.9.3-p0
[ruby-]1.9.3-p125
[ruby-]1.9.3-[p194]
[ruby-]1.9.3-head
ruby-head
You need to update RVM, the versions are part of the update:
rvm get head
rvm list known | grep 2.0.0
which gives:
[ruby-]2.0.0-rc1
[ruby-]2.0.0-rc2
[ruby-]2.0.0[-p0]
rbx-2.0.0-rc1
I'm a beginner programmer and I'm trying to get the rails server to run on OS X Lion. When I type "rails server" into the command line, I get this error:
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:777:in `report_activate_error': Could not find RubyGem rails (>= 0) (Gem::LoadError)
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:211:in `activate'
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:1056:in `gem'
from /usr/bin/rails:18
What do you think a solution to the problem is? Any help you can provide would be greatly appreciated. Thanks!
You need to install the rails gem. You could probably do this by running bundle install inside that project.
Have you installed the Rails Gem?
gem install rails
Then do a gem list to see if Rails is in there.
It's also important that you be in the proper directory. So if you keep all of your apps in /apps/ make sure you are in /apps/my_app before calling the server command.
The Ruby bundled with OS X is too old for Rails 3.
I would recommended using 'rvm' to install the latest stable version of ruby-1.9.2-p260
Since installing ruby requires some compilation, make sure you have a gcc installed. You can install XCode to get an usable gcc.
To install rvm, you need bash, git and curl.
RVM: http://beginrescueend.com/
After that, you can use
gem install rails
Enjoy!
The Lion Server looks at a non-default path for the gem file
For example have a look at the first line of /usr/share/devicemgr/backend/devicemgrd:
#!/usr/bin/env GEM_HOME=/usr/share/devicemgr/webserver/gems GEM_PATH=/usr/share/devicemgr/webserver/gems RAILS_ENV=production /usr/bin/ruby
So to install the missing gems, make sure to install them at the required path:
sudo GEM_HOME=/usr/share/devicemgr/webserver/gems gem install rails
I installed RVM and installed 3 different rubies: 1.8.7, ree, and 1.9.2.
I have a Rails 3.0.9 project that uses 1.8.7.
Now when I try to run the 3.0.9 project, I get this error:
Could not find xml-simple-1.1.0 in any of the sources
However, the following command:
bundle show xml-simple
yields:
/Users/me/.rvm/gems/ruby-1.8.7-p334/gems/xml-simple-1.1.0
Looks right to me. What am I missing here? The application, when running, is clearly not seeing the right path. Yet Bundler, when run at the command line, sees it just fine. I am not certain where these paths are to be set. I am admittedly new to RVM, I installed it because I want to start a new edge project with 1.9.2.
Thank you for any help you can provide.
I needed to learn how to create a gemset, then switch to that gemset. You can always check your gem and ruby environment with rvm using:
rvm info
That's what clued me in. Once I "use"d the appropriate gemset where the gem was installed, it worked great.
I am trying to install rails and have installed rvm and am trying to install rails but it is saying I do not have write permissions.
$ gem install rails --version 3.0.7
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions into the /var/lib/gems/1.8 directory.
When I try sudo it give me this error, I know that you can use --no-ri --no-r-doc but even when I did this rails was not installed properly. Does anyone have any ideas?
$ sudo gem install rails --version 3.0.7
Successfully installed rails-3.0.7
1 gem installed
Installing ri documentation for rails-3.0.7...
file 'lib' not found
Installing RDoc documentation for rails-3.0.7...
file 'lib' not found
from my experience with rvm, gems should't stay in /var/lib/
if you didn't specifically asked for this, there might be a problem with your rvm installation
if so, i would definetly recommend a clean rvm install by following ryan bigg's guide of installing rvm. i followed it every time and never ever had the slightest problem after.
hope this helps!
I am using Ubuntu 10.10, RVM and Ruby 1.9.2 and trying to install Heroku for the first time. Ruby 1.9.2 is the default for RVM and the only version I have been using.
The gem install heroku worked but trying to run heroku leads to "command not found" error. The executables folder /home/mike/.rvm/gems/ruby-1.9.2-p0/bin is already in the PATH. However, I see that Heroku was installed in /var/lib/gems/1.8/gems. gem list heroku does not show any installed gem. Simply creating symbolic links in .../ruby-1.9.2-p0 did not solve the problem, though it gives a different error:
/usr/lib/ruby/1.8/rubygems.rb:779:in `report_activate_error': Could not find RubyGem heroku (>= 0) (Gem::LoadError)
from /usr/lib/ruby/1.8/rubygems.rb:214:in `activate'
from /usr/lib/ruby/1.8/rubygems.rb:1082:in `gem'
from /home/mike/.rvm/gems/ruby-1.9.2-p0/bin/heroku:18
I don't understand gem and rvm well enough to know what to try next. I read in another question that Heroku supports Ruby 1.9.1 but not 1.9.2 but don't know if that is still true. If so, how does one use Rails and Ruby 1.9.x with Heroku?
The problem turned out to be related to sudo and Ubuntu. RVM depends on the rvm_path environment variable to get started. According to answers to another question, sudo does not preserve the PATH variable in some versions of secure Linux. I don't know if it should ever preserve the rvm_path variable, but in any case, it does not on my version of Ubuntu. So the result of sudo gem install is that the default, RVM-provided version of Ruby is not available during the installation, and the system-default is used. In my case that is version 1.8. The installation appears to succeed, but it is not going to the right gem version.
The solution was simply to use gem install instead of sudo gem install.
If 'gem list' doesn't show the Heroku gem then that would seem to be the problem (the error you posted occurs when running a Heroku command without the gem installed).
Have you tried installing it again? Any error messages?
It does work with 1.9.2.
Had the exact same problem on Mac OSX 10.6.5. Reinstalling without sudo worked in this case also. Thanks for the explanation... being a nube, I would have never figured it out.