After the latest update it appears a few of my gems have been affected and are either missing/changed.
In particular the gem 'rubocop' is giving me issues as I use atom for a text editor and I have flags popping up.
"Failed to spawn command rubocop. Make sure rubocop is installed and on your PATH"
"Error: spawn rubocop ENOENT"
I've tried re-installing the rubocop gem through the command line and I'm running into this issue:
gem install rubocop
Fetching: rainbow-2.1.0.gem (100%)
ERROR: While executing gem ... (Errno::EACCES)
Permission denied - /Library/Ruby/Gems/2.0.0/rainbow-2.1.0.gem
I've even tried to uninstall the gem but there's no output after running gem uninstall rubocop
I really have no idea where to begin to resolve this and I'd love any help possible!
Make sure you add sudo before gem install rubocop
And then go to documentation of rubocop to check which version of ruby it takes to run.
You can also install rbenv.its better then rvm (they are ruby version managers your can put multiple versions of ruby on same machine using them)
if further you need help .. let me know !
happy coding
Don't forget that installing things into the system Ruby requires sudo privileges, /Library is usually restricted access.
Installing your own personal Ruby with rvm or rbenv avoids all this.
Related
I have been trying to solve this issue during 3-4 hours but do not get any answer yet.
run : $gem install xcpretty
it shows below error:
ERROR: While executing gem ... (Errno::EACCES)
Permission denied # rb_sysopen - /Library/Ruby/Gems/2.3.0/gems/rouge-2.0.7/Gemfile
and getting ruby upgrade issue, then installed ruby newly with updated version.
run : $sudo gem install xcpretty
then it shows below error :
Fetching: rouge-2.0.7.gem (100%)
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /Library/Ruby/Gems/2.3.0 directory.
then getting gem upgrade issue, and solved with upgrading gem.
tried again as well as with below command also
run : sudo gem install xcpretty --verbose
even though used 'sudo chmod -R 777' also into my /usr/bin directory
But still getting :
Fetching: rouge-2.0.7.gem (100%)
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /usr/bin directory.
After a quality time research I did not get any solution but below code which I customize is working fine for me.
sudo gem install -n /usr/local/bin xcpretty
You should never use sudo to install gems, no matter how many times you see it as an accepted answer on Stack Overflow.
This "write permissions" error comes up over and over, and is due to an improperly configured Ruby environment. The safe way to install gems on a Mac with a proper Ruby development environment involves six steps at a high level:
Install Homebrew (which also installs the prerequisite Apple command line tools)
Install a Ruby manager (such as chruby, rbenv, asdf, RVM) - most of these can be installed with Homebrew
Configure the Ruby manager by adding the appropriate lines to your shell file (~/.bash_profile or ~/.zshrc) - each manager will have instructions for doing this, and this is a typical step that people miss
Restart the terminal (or open a new tab) for the shell changes to take effect - another step that is often overlooked
Install a specific version of Ruby using the Ruby manager
Switch to that version of Ruby using the Ruby manager
My personal preference is chruby with ruby-install. For more details and a script that can automate this whole process, check out my answer here:
https://stackoverflow.com/a/54873916/928191
When trying to bundle install on a Gemfile that contained only the GitHub Pages gem and nothing else, on Ubuntu 18.04, I got error messages telling me to try installing eventmachine using gem install. That always succeeds, but bundle install still fails. How can I get bundler to see that the gem is installed?
I fixed this after many hours of struggle, by noticing that on the GitHub Pages repo there's a note that says
Important: Make sure you have Bundler > v1.14 by running gem update bundler in your terminal before following the next steps.
I have no idea why this mattered but I removed my ruby packages from Ubuntu and reinstalled them, then installed bundler with rubygems, which gave me a newer version:
sudo apt-get remove ruby
sudo apt-get install ruby ruby-dev
sudo gem install bundler
bundler --version
If anyone knows why I needed that version of bundler, or how I should have diagnosed this faster, I'd be interested to hear it. I'm not new to programming but I'm new to Ruby.
From my understanding it might be the gem you are trying to install requires a specific feature provided by bundler. If you check the change log of bundler there is some changes related to install github based gems on how to correctly read the user git settings. So I think that might be where the problem is from.
I am attempting to use bundle install. I am not a Ruby user - this is my first real foray into even running rake. I'm simply trying to user some packages from ThrowtheSwitch.org that use Rake and so on.
I initially installed ruby several days ago using:
sudo apt-get install ruby-full
This allowed me to use rake with Unity testing framework. Now I'd like to use CMock. the instructions for using CMock say to cd into the directory then
$ bundle install
$ bundle exec rake
So I install bundler using:
$ sudo apt-get install bundler
But then running the bundle install continuously asks me for my password. So I try:
$ gem install bundler
Which fails for write permissions on /var/lib/gems/1.9.1. So I try:
$ sudo gem install bundler
which installs OK so I try the bundle install again. But still get continuously asked for my password. So I try:
$ sudo bundle install
And get a warning that I should not run bundler as root:
Don't run Bundler as root. Bundler can ask for sudo if it is needed, and installing your bundle as root will break this application for all non-root users on this machine.
How can I install this properly so that I can run it as expected?
Note: I have seen that there are several other questions on this topic, none of which I understood the answers to so let me underline that I am not a ruby (or even web stack) dev - I need this in layman's terms as much as possible.
Note also: I did see several mentions of RVM and rbenv. I'm not sure if they were incidental to those questions in particular or if one or both is required. I do not currently have either. Am about to research exactly what they are now.
Note the third: My platform is WSL (so Ubuntu, kind of).
I've been working with Ruby only a few weeks now. I'll say, I know where you are. I am not about to help much but will say, to your last question in the comments, that my understanding is that the two commands are different.
My understanding of a short answer.. One can have diff versions of Ruby they need to work with (legacy projects, etc) and not every version of Ruby can run every version of a given gem. For this reason, one can use rbenv or rvm to help manage the art of setting up a project with a particular version of ruby and then installing the needed gems.
I've been working with rvm on my mac and rbenv in linux and find them both similar enough for the simple stuff I've been doing. Installing rbenv on linux proved slightly easier. Once set up properly, sudo is no longer needed to install gems - which is preferred. I would recommend trying one of these and installing per their website instructions. Things should go smoother once set up.
Try running:
gem install bundler
bundle install
I will try to explain how the ruby ecosystem works:
Bundler is a gem - a module - that is installed on top of ruby. Gems are installed using
gem install <gem name>
I would recommend you look at installing a ruby version manager before doing anything else. the two main candidates are RVM and rbenv.
I find RVM is the simpler option for the beginner, but it eats up more space on your hard drive.
check out how to install rvm at https://rvm.io/
alternatively look at rbenv at https://github.com/rbenv/rbenv
after you have installed ruby you can test that it is installed correctly by calling ruby -v from the command line.
After that you can install bundler by calling gem install bundler
Once the gem is installed you should be able to run bundler, however if you are using rbenv you might need to run rehash first
I hope that explanation makes sense - please shout if you have questions.
If you - for some reason - stuck with a system installation of ruby,
this does the job:
export GEM_HOME="$(ruby -e 'puts Gem.user_dir')"
export PATH="$GEM_HOME/bin:$PATH"
found it elsewhere: https://guilhermesimoes.github.io/blog/using-bundler-with-system-ruby
I am trying to install a ruby gem in My Machine using xcode where I call a shell script.
cd "/Users/Desktop/gemfolder"
gem install somegem.gem
I am getting an error like this:
While executing gem ... (Errno::EACCES)
Permission denied - /Library/Ruby/Gems/1.8
Any workaround for it I am a newbie to ruby so don't know what to do anyhelp will highly appreciated.
Being sudo might fix your problem, however when you are installing gems , its not a good idea to install them as sudo, so the preferred way of installing ruby on any machine is to install rvm (Ruby Version Manager) first and then install your ruby version.
Main advantages of having a ruby version manager are,
1 - allows you to install multiple ruby versions side by side
2 - allows you to install gems for each ruby version (via gemsets)
So to install rvm in your mac, check here
list of ruby version managers
I recently started learning Ruby and Ruby on Rails, and have watched a plethora of getting started materials. I have been finding lately that I keep getting errors where gems won't install or they will be installed but they can't be used for some reason, and I have decided that I want to remove everything down to once again just having Ruby installed and start over with the installation. One training video had me install most of my gems with RVM, so I don't know if that changes anything.
So in short my question is "How to I get rid of RVM, Rubygems, and all installed Gems so that I can start over with just Ruby?"
Edit: I am on Mac OS 10.6
gem uninstall -aIx
Uninstalls all gems without prompt.
Options
-a, --[no-]all Uninstall all matching versions
-I, --[no-]ignore-dependencies Ignore dependency requirements while
uninstalling
-x, --[no-]executables Uninstall applicable executables without
confirmation
From the RVM support site:
RVM installs everything into ~/.rvm.
To remove RVM from your system run 'rm
-rf ~/.rvm'. You may have one additional config file in ~/.rvmrc and
of course the RVM hook in your
bash/zsh startup files.
So, just go to the command line and type rm -rf ~/.rvm
All the installed gems are in the ~/.rvm folders, so doing the above will remove the gems and installed rubies in one go.
Gems you added pre-RVM with the default ruby install can be removed by typing this at the command prompt:
for x in `gem list --no-versions`; do gem uninstall $x -a -x -I; done
For Windows and Unix copy/paste in command prompt (Ruby 1.9.x).
ruby -e "`gem list`.split(/$/).each { |line| puts `gem uninstall -Iax #{line.split(' ')[0]}` unless line.strip.empty? }"
using RVM, you could just type...
rvm gemset empty GEMSET
where GEMSET is the gemset which you would like to empty. then...
install bundle
yum install bundler and finally
bundle install
rvm implode (see cli docs) seems to work - and it even tells you where to look at for leftovers
This is work for me on Ubuntu 16.04. For me, when I was executing
command rails -v it throw errors because of NameError. I have
installed 3 version of rails (4.2.0, 4.2.6, 5.0.0.1). I was trying
to uninstall unnecessary gem using command gem uninstall rails -v
version number but I won't able to, but I find a way to solve
this problem. In order to uninstall all gems, you have to loop
through all entries in gem list with bash scripting. This method is
very inconvenient. Thanks to Rubygems 2.1.0, you now could do it
with one command.
STEP - 1
Firstly, please make sure you upgrade your Rubygems to 2.1.0 or
newer. For this run this command (Incase you are working on an older
version. You can check your gem version using this command any one
of them gem -v or gem --version)
gem update --system
gem --version
STEP - 2
Run this command in you terminal
gem uninstall --all
Step - 3
Install gem bundles (it is not necessary I think just for
precautions)
gem install bundle
Step - 4
Install the rails on your system using this command
gem install rails -v specific version you want to install you can check the rails version on the official site rails all versions
example :- I have installed rails 4.2.6
version, you install as per requirement.
gem install rails -v 4.2.6
Step - 5
Finally check the version of installed rails framework application
by Using basic command rails -v. It will echoed the current
version of rails frameworks. Enjoy :)
References
http://ruby-journal.com/how-to-uninstall-all-ruby-gems/
http://guides.rubyonrails.org/v4.1/getting_started.html
Step 1:
I first kept running into an error that said:
You don't have write permissions for the /usr/bin directory
To get permission, I became a root user with (this is potentially dangerous for reasons beyond my current understanding):
sudo -s
Credit
Step 2:
Then, I kept running into an error that said:
[gem] cannot be uninstalled because it is a default gem
This allowed me to uninstall everything:
for i in `gem list --no-versions`; do gem uninstall -aIx $i; done
Credit
FWIW, there are some weird cases where gems are installed but not really installed:
This should do the trick reasonably reliably.
gem uninstall -Iax `gem list | grep default | awk '{print $1}'`