I am literally new to Ruby. This is my first day and naturally it starts with installing it on my machine.
I am using Mac os El Capitan. It already shipped with ruby so I just updated it, installed the rvm & gem and tried to install rails using the following commands:
rvm get head
sudo gem update --system
sudo gem install rails
The last command (installing rails) is giving me the following error:
ERROR: While executing gem ... (Errno::EPERM)
Operation not permitted - /usr/bin/rackup
Any idea what is it and how to fix it? I have found couple of questions on stackoverflow with similar, but not the same error, but I didn't even understand the answers. Again I am really a novice here.
Edit:
I keep getting comments that this is a duplicate question. However it is not giving me the same error as in the other questions.
Please if anyone knows what is this error about, or whether it's really the same error, explain why, otherwise I don't see a reason why you should mark the question as duplicate without understanding the error message.
My advice is to install rbenv. Later you can easily switch between ruby versions
brew install rbenv ruby-build
# Add rbenv to bash so that it loads every time you open a terminal
echo 'if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi' >> ~/.bash_profile
source ~/.bash_profile
# Install Ruby
rbenv install 2.3.1
rbenv global 2.3.1
ruby -v
And then install rails
gem install rails -v 4.2.6
rbenv rehash
rails -v
# Rails 4.2.6
Related
To start I follow the exact steps from Setup Ruby On Rails on
macOS 10.13 High Sierra, just like I have with every other version of mac/ubuntu.
So basically install homebrew, install rbenv ruby-build
add the following to bash profile and source it:
if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi
then do
rbenv install 2.5.1
rbenv global 2.5.1
ruby -v
outputs:
ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-darwin17]
do a which ruby to to make sure:
/Users/pdavies/.rbenv/shims/ruby
run gem install
gem install rails -v 5.2.0
which outputs:
Successfully installed rails-5.2.0
Parsing documentation for rails-5.2.0
Done installing documentation for rails after 0 seconds
1 gem installed
then a rehash and check version:
rbenv rehash
rails -v
outputs:
Rails is not currently installed on this system. To get the latest version, simply type:
$ sudo gem install rails
You can then rerun your "rails" command.
found anther issue that suggested adding:
export PATH="$HOME/.rbenv/bin:$HOME/.rbenv/shims:$PATH"
eval "$(rbenv init -)"
to the bash profile, did that sourced it and tried again still nothing. to check the output of echo $PATH was:
/Users/pdavies/.rbenv/shims:/Users/pdavies/.rbenv/bin:/Users/pdavies/.rbenv/shims:/usr/local/bin:/usr/bin:/usr/sbin:/bin:/sbin
Just to make sure i also did which gem incase i wasnt using the right one, output:
/Users/pdavies/.rbenv/shims/gem
when I do a which rails i get:
/usr/bin/rails
I found some blog that said to delete that, but I cant seem to do that either, i just get:
sudo rm -f /usr/bin/rails
Password:
rm: /usr/bin/rails: Operation not permitted
This is a fresh install of OSX and the only way I can get it work is to downgrade the version of OSX that is installed, which is a pain in the ass!
Any help would be grateful
Thanks
Am trying to set up rails on mac using rbenv and Homebrew.
Currently getting the following message when attempting to 'gem install rails':
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /Library/Ruby/Gems/2.0.0 directory.
username-mbp:projects username$ 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
I'm trying to get ruby 2.1.4 installed via rbenv for a client project.
Though previously I've been able to install ruby versions through rbenv, after upgrading to Yosemite, I keep getting the following error:
rbenv: no such command 'install'
After digging around, I saw lots of tips about how "install" comes from the ruby-build plugin, which is installed via homebrew:
which ruby-build
/usr/local/bin/ruby-build
I installed rbenv via Homebrew, but when I try use which rbenv, I get:
rbenv () {
typeset command
command="$1"
if [ "$#" -gt 0 ]
then
shift
fi
case "$command" in
(rehash|shell) eval `rbenv "sh-$command" "$#"` ;;
(*) command rbenv "$command" "$#" ;;
esac
}
I have run brew update and brew upgrade rbenv ruby-builder, and it tells me everything is up to date.
Below is my full $PATH:
zsh: no such file or directory: /usr/local/var/rbenv/shims:/usr/local/var/rbenv/shims:/usr/local/bin:/usr/local/sbin:/Users/dannycox/.rbenv/shims:/Users/dannycox/.rbenv/shims:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/usr/local/go/bin:/Users/dannycox/.rbenv/shims:/Users/dannycox/.rbenv/bin
UPDATE: Found another answer with a little deeper digging on github that showed signs of promise, but failed to solve the issue with rbenv. https://github.com/sstephenson/rbenv/issues/610#issuecomment-56240018
I believe 2.1.4 is now installed on my machine, but it installed here:
Successfully installed ruby 2.1.4 into /Users/dannycox/.rubies/ruby-2.1.4
As a result, my bundler won't work with the new ruby 2.0 version and I get the following error when I try to gem install bundle:
Fetching: bundler-1.7.6.gem (100%)
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /Library/Ruby/Gems/2.0.0 directory
Still need help to identify why ruby-build isn't playing nice with rbenv...
Make sure to install optional step 5 in the instructions:
git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build
Install ruby-build, which provides the rbenv install command that simplifies the process of installing new Ruby versions.
I had similar problem, and trace the problem to ruby-build. So i updated the homebrew and reinstall the ruby-build
> brew update
> brew reinstall ruby-build
Find the ruby version
> brew ls -v ruby-build | grep 2.1.4
then install intended version ruby again
> rbenv install 2.1.4
From your perms error I think you are trying to install to the system ruby, which is the one that comes with Apple OSX. You want to use rbenv to install your own ruby and install gems into that.
Read - https://github.com/rbenv/ruby-build#readme
And use the
rbenv versions
command to show what instance of ruby you are about to install the gems into. If it's system then you need to install your own ruby instance and then use that ruby for gems.
I have had rails installed and almost working. Was working on a solution to another problem with I accidentally closed the bash window. So I reopened it, and now I am unable to use rails at all and it's telling me that rails isn't installed. So I ran gem install rails --no-ri --no-rdocand now I get the following:
ERROR: While executing gem ... (Errno::EEXIST)
File exists # dir_s_mkdir - /usr/local/Cellar/ruby/2.1.1_1/lib/ruby/gems`
How do I correct this error?
I just removed the broken gems, site_ruby and vendor_ruby symlinks from the /usr/local/Cellar/ruby/2.1.1_1/lib/ruby/ folder and now everything seems to work fine.
I just added a gems/ directory here /usr/local/lib/ruby/ and that solved the issue.
for a temporary solution, you can mkdir -p /usr/local/Cellar/ruby/2.1.1_1/lib/ruby/gems/2.1.0 to solve.
When you open your bash window (called the "terminal window" or "console"), what folder ("directory") are you in? Find out with:
$ pwd
Navigate to the folder where you created your Rails project using the Unix cd command, for example:
$ cd workspace/learn-rails
If you are using RVM, make sure you have selected the correct gemset:
$ rvm gemset list
gemsets for ruby-2.1.1 (found in ...)
(default)
global
=> learn-rails
Then see if Ruby and Rails are installed:
$ ruby -v
ruby 2.1.1p76 (2014-02-24 revision 45161) [x86_64-darwin13.0]
$ rails -v
Rails 4.1.0
Refer to the article Install Ruby on Rails for help. If you haven't followed all the steps in the article, you may have problems, especially if you followed some of the inaccurate instructions found elsewhere on the web.
I was recently in this wormhole. It seems like Homebrew's ruby installation has an issue with soft links and uses version 2.1.1. I couldn't "gem install" anything without getting the annoying "File exists # dir_s_mkdir" error. Even tried MacPort and that was a nightmare.
First uninstall ruby via
brew uninstall ruby
or
port uninstall ruby
And follow the instruction on https://rvm.io/rvm/install to install ruby
\curl -sSL https://get.rvm.io | bash -s stable --ruby
It might then complain about ruby-2.0.0-p353 not installed
To install do:
rvm install ruby-2.0.0-p353
Then run the rvm install script. Your "gem install << whatever >>" should now work
This fixed the issue for me (Homebrew on a Mac, Ruby 2.1.3):
$ brew reinstall ruby
$ brew unlink ruby && brew link ruby
the same issue. I just remove dir_s_mkdir, then pod install. it works for me!
So when I run:
$ rails new mywebapp
I get the following error:
Your user account isn't allowed to install to the system Rubygems.
This is despite installing rbenv via Homebrew.
I have added the following to ~/.bash_profile
eval "$(rbenv init -)"
And installed a version of Ruby.
Running:
$ echo $PATH
Gives me:
/Users/myusername/.rbenv/shims:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin
Im not sure where to go from here. Hoping someone can help.
Many thanks.
Agreeing with Dylan on the problem, I think that the best solution is to set explicitly an Rbenv global version using rbenv global 2.1.1
And then reinstalling bundler on that version.
gem uninstall bundler
gem install bundler
rbenv rehash
This worked good for me.
Hope it helps.
Based on the comments to the original question, the answer was that the system-installed rails executable was being used instead of the rbenv version. The fix was to run:
gem install rails