How can I switch to ruby 1.9.3 installed using Homebrew? - ruby

I have installed ruby 1.9.3 using hombrew
brew install ruby
But default 1.8.7 is still used. How can I switch osx to use 1.9.3 as default ruby?

I suggest you take a look at rvm.
You can then set it as default with rvm use 1.9.3 --default
But if you are happy with your homebrew install.
Then just change the precedence of directories in the PATH
Here is my /etc/paths
# homebrews should always take precedence
/usr/local/bin
# the default stack
/usr/bin
/bin
/usr/sbin
/sbin
This is important generally for homebrew, else the system version of git, ruby, pg_admin,... will all be used instead of the brew version.
if you say which -a ruby you'll see all the installed rubies, and the precedence in the PATH
eg.
$ which -a ruby
/Users/matthew/.rvm/rubies/ruby-1.9.3-p0/bin/ruby
/Users/matthew/.rvm/bin/ruby
/usr/bin/ruby
UPDATE: I now don't think you should change /etc/paths
Instead you need to check which of .profile, .bashrc, or .bash_login is being loaded in your shell, and just add /usr/local/bin to your path.
For me, I only have a .profile. You can create that file if none of those files already exist in your home directory.
# homebrews should always take precedence
export PATH=/usr/local/bin:$PATH

SHORT ANSWER:
after installing ruby via homebrew just do this:
brew link --overwrite ruby
and restart or reopen your Terminal
LONG ANSWER
So I did a normal install of ruby using homebrew
brew install ruby
that installed fine BUT it was still using the system's default ruby.
which I verified by doing:
which ruby
#/usr/bin/ruby
So as per Matthew Rudy's suggestion, I checked the order of my /etc/paths, and all was good.
Then I decided to do:
which -a ruby
#/usr/bin/ruby
#usr/local/bin/ruby
so nothing was broken as such.
tried to reinstall ruby again using the homebrew method, and then i found it.
Homebrew mentioned:
Warning: ruby-2.3.1 already installed, it's just not linked
so had to do:
brew link --overwrite ruby

If you'd like to use homebrew to install 1.9.3, you can follow these steps:
$ brew update
$ brew install rbenv
$ brew install ruby-build
Once you have rbenv and ruby-build installed, you can run the following command to get Ruby 1.9.3 installed.
$ rbenv install 1.9.3-p125
Now if you’d like to use 1.9.3 by default, you can run the following command:
$ rbenv global 1.9.3-p125

I had similar situation. I installed ruby using Homebrew. which -a ruby gave me the following output:
#usr/local/bin/ruby
#/usr/bin/ruby
Which means that newly installed version should have been used, but ruby --version still returned the old system version.
I quit terminal (Cmd+Q), and after restart ruby --version returned the correct version. So make sure you restart terminal after installing before trying any other (potentially unnecessary) fixes.

Ruby was installed by Homebrew at /usr/local/opt/ruby. So, we need to add this path to bash or Zsh.
# Type this to find out which shell you're using (e.g., bash, Zsh)
echo $SHELL
# If you're using Bash (e.g., echo $SHELL returns /bin/bash)
echo 'export PATH="/usr/local/opt/ruby/bin:$PATH"' >> ~/.bash_profile
# If you're using Zsh
echo 'export PATH="/usr/local/opt/ruby/bin:$PATH"' >> ~/.zshrc
Then, source the file
# E.g., if you're using bash
source ~/.bash_profile
Finally, verify ruby's version
ruby -v

SHORT:
Do note what you want to change it for.
If you're on OS X and trying to use Ruby for something like Jekyll, then don't use homebrew because that's what Apple is using for Ruby for and it might not be good to use if you're not sure what you're doing. Instead, use rbenv or RVM.
LESS SHORT:
I was trying to switch from the default version to an updated version (from 2.0) to use Jekyll because it required Ruby version 2.2.5 and above. I updated it and version 2.5 was installed, but when I checked "ruby -v", it was still 2.0. Once I finally got around to changing the default version, I wasn't able to install the package I needed because I didn't have write permission. For example, if you come across something like this, then you probably are having the same problem
$ gem install jekyll bundler
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /Library/Ruby/Gems/2.0.0 directory.

In OSX you can change the path using:
sudo nano /etc/paths
And then add a path or change the order.

After seeing Craig Wayne's answer I thought maybe I had missed a warning when installing ruby with Homebrew. So I reinstalled it with brew reinstall ruby#2.7 and there it was:
==> Caveats
By default, binaries installed by gem will be placed into:
/usr/local/lib/ruby/gems/2.7.0/bin
You may want to add this to your PATH.
ruby#2.7 is keg-only, which means it was not symlinked into /usr/local,
because this is an alternate version of another formula.
If you need to have ruby#2.7 first in your PATH, run:
echo 'export PATH="/usr/local/opt/ruby#2.7/bin:$PATH"' >> ~/.zshrc
For compilers to find ruby#2.7 you may need to set:
export LDFLAGS="-L/usr/local/opt/ruby#2.7/lib"
export CPPFLAGS="-I/usr/local/opt/ruby#2.7/include"
For pkg-config to find ruby#2.7 you may need to set:
export PKG_CONFIG_PATH="/usr/local/opt/ruby#2.7/lib/pkgconfig"
So the solution for me was adding /usr/local/opt/ruby#2.7/bin: to the beginning of PATH in ~/.zshrc.

Just as an alternative approach for anyone else looking for an answer to this - you can set an alias in your .bash_profile e.g
ruby="/usr/local/bin/ruby"
this is how i got around the issue

Related

Correcting my Linux $PATH of multiple rbenv paths

I am fresh to Linux Ubuntu and I have messed up my Ruby on Rails install.
Therefore, I uninstalled Ruby and attempted to follow the rbenv installation.
However, I am getting this stack trace:
martin#martyux:~$ curl -fsSL https://github.com/rbenv/rbenv-installer/raw/master/bin/rbenv-doctor | bash
Checking for `rbenv' in PATH: multiple
You seem to have multiple rbenv installs in the following locations.
Please pick just one installation and remove the others.
/home/martin/.rbenv/bin/rbenv
/usr/bin/rbenv
/bin/rbenv
Checking for rbenv shims in PATH: not found
The directory `/home/martin/.rbenv/shims' must be present in PATH for rbenv to work.
Please run `rbenv init' and follow the instructions.
Checking `rbenv install' support: /home/martin/.rbenv/plugins/ruby-build/bin/rbenv-install (ruby-build 20210119)
Counting installed Ruby versions: none
There aren't any Ruby versions installed under `/home/martin/.rbenv/versions'.
You can install Ruby versions like so: rbenv install 2.2.4
Checking RubyGems settings: OK
Auditing installed plugins: OK
I am assuming that there's instances of rbenv I attempted to install earlier and somehow is still linked to $PATH. I didn't find anyone with this exact issue and I am not competent at navigating the Unix shell yet, so I would appreciate some thorough help.
I don't know how you got rbenv to end up in /bin/rbenv and usr/bin/rbenv, but for what I can see from their installation guide you only need ~/.rbenv/bin/rbenv.
Assuming you use bash, I think these are all added to your $PATH in ~/.bashrc. You should find something like:
export PATH="$PATH:/bin/rbenv"
And
export PATH="$PATH:/usr/bin/rbenv"
You can remove those lines. To clean up properly you can also remove the rbenv installs they refer to as well.
Lastly, as the error message says, you want to run rbenv init after doing this to create the shims folder.
I did not have export PATH="$PATH:/bin/rbenv" and export PATH="$PATH:/usr/bin/rbenv" in my ~/.bashrc
I just ran
sudo apt-get purge ruby
sudo apt-get purge rbenv
and then
curl -fsSL https://github.com/rbenv/rbenv-installer/raw/main/bin/rbenv-doctor | bash
showed only one path.
If you set up a ~/.gemrc with gem: --user-install in it, then the gemrc will configure rbenv to install gems in ~/.gem, which is not how rbenv is expecting it - rbenv wraps the gem call via a shim, so you can try rename / remove ~/.gemrc and then try run gem install <whatever> again and it should all work

How to change which version of Ruby I am using

I need to run 2.5.3. I use brew to manage my ruby installation (as I couldn't get rvm to work on my machine). When I run
$ruby -v
I get
ruby 2.3.7p456 (2018-03-28 revision 63024) [universal.x86_64-darwin18]
However when I attempt to update it using
brew upgrade ruby
I get
Error: ruby 2.6.1 already installed
Why is it so inconsistent on what ruby version I really have installed?
You should be using a Ruby version manager to manage multiple versions of Ruby. I prefer using rbenv. Following are the steps to install it on a mac (they are explained in detail about what is being done and why; if you want a shortcut, try running all the commands in sequence but I'd still insist you read through the steps).
rbenv
Before proceeding with the actual installation, remember these points:
rbenv in itself does not include the ability to install ruby versions. It only changes ruby version per directory. For installing rubies, you need to install the ruby-build tool (which is part of the rbenv project). It is the same for chruby as well which uses another tool to build ruby. EDIT (June 2021): It looks like rbenv installations now come with ruby-build and are capable of compiling ruby right on your machine. I will leave the answer as it is for so that it makes sense for someone on an older setup (or in case they revert that decision later).
ruby-build has to be installed as a plugin to rbenv.
In case you need to learn about the tools in detail, here are the links for rbenv and ruby-build.
The installation procedure for both tools (and a lot of other help) is available in the README files for the projects. Refer to those if things don't work for you.
Installing rbenv
Run the following command to clone rbenv repo into .rbenv directory in your home directory.
$ git clone https://github.com/rbenv/rbenv.git ~/.rbenv
Your system still does not know where rbenv is. Add it to your path by running:
$ echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile
To initialize rbenv so that it can help you with changing rubies when you change directories, run this:
~/.rbenv/bin/rbenv init
This should tell you something like this:
# Load rbenv automatically by appending
# the following to ~/.bash_profile:
eval "$(rbenv init -)"
So run this:
echo 'eval "$(rbenv init -)"' >> ~/.bash_profile
By this point rbenv should be installed. When you run rbenv on the command line, you should get something like this:
$ rbenv
rbenv 1.1.1-39-g59785f6
Usage: rbenv <command> [<args>]
Some useful rbenv commands are:
commands List all available rbenv commands
local Set or show the local application-specific Ruby version
global Set or show the global Ruby version
shell Set or show the shell-specific Ruby version
rehash Rehash rbenv shims (run this after installing executables)
version Show the current Ruby version and its origin
versions List all Ruby versions available to rbenv
which Display the full path to an executable
whence List all Ruby versions that contain the given executable
See `rbenv help <command>' for information on a specific command.
For full documentation, see: https://github.com/rbenv/rbenv#readme
NOTE: If you get a warning saying that rbenv is not installed, just run source ~/.bash_profile. That will rerun the ~/.bash_profile script and get rbenv in your path. You should be able to run rbenv after that without trouble.
Do notice that rbenv does not give an option to install or uninstall rubies yet. For this we need to install ruby-build.
Installing ruby-build
We need to add the ruby-build package as a rbenv plugin so that we can type rbenv install <ruby version> to install rubies. All you need to do is to create the plugins directory and checkout the git repo for ruby-build in the plugins directory. Run the following:
$ mkdir -p "$(rbenv root)"/plugins
$ git clone https://github.com/rbenv/ruby-build.git "$(rbenv root)"/plugins/ruby-build
Testing if rbenv and ruby-build have been installed
Run rbenv without any arguments on the terminal should now show the install and uninstall commands being available. Something like this:
$ rbenv
rbenv 1.1.1-39-g59785f6
Usage: rbenv <command> [<args>]
Some useful rbenv commands are:
commands List all available rbenv commands
local Set or show the local application-specific Ruby version
global Set or show the global Ruby version
shell Set or show the shell-specific Ruby version
install Install a Ruby version using ruby-build
uninstall Uninstall a specific Ruby version
rehash Rehash rbenv shims (run this after installing executables)
version Show the current Ruby version and its origin
versions List all Ruby versions available to rbenv
which Display the full path to an executable
whence List all Ruby versions that contain the given executable
See `rbenv help <command>' for information on a specific command.
For full documentation, see: https://github.com/rbenv/rbenv#readme
If you see that output, your rbenv is installed properly.
Installing ruby
To install ruby 2.5.3, you could run (wait, don't run it yet):
rbenv install 2.5.3
It should output a few lines, take some time and then tell you that version 2.5.3 was installed. However, there is a problem - if the installation fails, especially during compilation, sometimes, the terminal gets stuck and there is no output on the terminal. It just appears to be installing for a long time (forever). To get more info about what is happening, run the following:
rbenv install -f -v 2.5.3
The -f argument tells rbenv to force-install the given version. So if it is already installed, rbenv will re-install (basically overwrite) the given version. So if an installation failed, -f will make sure of the installation.
The -v argument tells rbenv to output verbose messages. So everything that ruby-build does (including the compilation process) will be shown to you. Don't be afraid by the word compilation here. It normally compiles fine without troubles and does not alter your system ruby (the one installed with sudo apt install ruby on Linux or the one you get by default on macOS) whether it succeeds or fails.
Test installation
Once the installation succeeds, you can run the command below to check which versions are installed (output included in the snippet below):
$ rbenv versions
system
* 2.5.3 (set by /home/ubuntu/.rbenv/version)
Note: On mac, the newly installed ruby will have a different path.
The one with the * in front of it is the one which is active right now. If you run which ruby, you should get a path with a ruby shim. If you are curious, read the rbenv documentation to know what shims are, though you wouldn't have to worry about them.
$ which ruby
/home/ubuntu/.rbenv/shims/ruby
Configure & Forget
rbenv is a cool thing to have but to keep writing rbenv shell 2.5.3 and rbenv shell 2.4.5 every single time is a problem. What you should instead do is set a version of ruby for the directory and forget about rbenv.
You can just create a file named .ruby-version containing one line - the version number of ruby you want to use for all ruby scripts within this directory (and subdirectories). Just cd to the required directory and run:
echo "2.5.3" > .ruby-version
All ruby scripts within that directory and subdirectories will then use version 2.5.3.
I would like to thank Vaibhav for his informative answer. I have not yet tried to install rbenv but I will absolutely try that. For now I was able to work around this issue by not specifying a ruby version in my gem file. This is a short term workaround but it worked!

You don't have write permissions for the /Library/Ruby/Gems/2.3.0 directory. (mac user)

below is what I need to do.
To run the specs, you'll need to install RSpec. First, run gem install bundler in the root directory of your project. Then, run bundle install. To run a single spec file, run a command like this: bundle exec rspec spec/00_hello_spec.rb. To run all of the specs at once, run bundle exec rspec.
So, I typed gem install bundler in Terminal, and got the error:
You don't have write permissions for the /Library/Ruby/Gems/2.3.0 directory.
and this was in the project file in atom
source "https://rubygems.org"
gem "rspec", "~> 3.2.0"
My question is:
It seems like terminal is giving me the response because I'm not supposed to change anything on ruby, and I need to bundle install inside of atom? Could anyone tell me how to use atom or run anything in atom?
Update:
I now have a paid script that will set up a proper Ruby environment for you with a single command!
I also keep my free step-by-step guide for installing Ruby on a Mac up to date (more often than I update this answer).
You are correct that macOS won't let you change anything with the Ruby version that comes installed with your Mac. However, it's possible to install gems like bundler using a separate version of Ruby that doesn't interfere with the one provided by Apple.
Using sudo to install gems, or changing permissions of system files and directories is strongly discouraged, even if you know what you are doing. Can we please stop providing this bad advice? I wrote a detailed article that shows why you should never use sudo to install gems.
The solution involves two main steps:
Install a separate version of Ruby that does not interfere with the one that came with your Mac.
Update your PATH such that the location of the new Ruby version is first in the PATH. Some tools do this automatically for you. If you're not familiar with the PATH and how it works, it's one of the basics that you should learn, and you'll understand why you sometimes get "command not found" errors and how to fix them.
There are several ways to install Ruby on a Mac. The best way that I recommend, and that I wish was more prevalent in the various installation instructions out there, is to use an automated script like Ruby on Mac that will set up a proper Ruby environment for you.
The main reason is that it saves each person a ton of time. Time is our most limited and valuable resource. Why make people do things manually when they can be automated with a perfect result every time?
Another reason is that it drastically reduces the chance of human error, or errors due to incomplete instructions.
If you want to do things manually, keep on reading. First, you will want to install Homebrew, which installs the prerequisite command line tools, and makes it easy to install other necessary tools.
Then, the two easiest ways to install a separate version of Ruby are:
If you would like the flexibility of easily switching between many Ruby versions [RECOMMENDED]
Choose one of these four options:
chruby and ruby-install - my personal recommendations and the ones that are automatically installed by the Ruby on Mac script. These can be installed with Homebrew:
brew install chruby ruby-install
rbenv - can be installed with Homebrew
RVM
asdf
If you chose chruby and ruby-install, you can then install the latest Ruby like this:
ruby-install ruby
Once you've installed everything and configured your .zshrc or .bash_profile according to the instructions from the tools above, quit and restart Terminal, then switch to the version of Ruby that you want. In the case of chruby, it would be something like this:
chruby 3.1.3
Whether you need to configure .zshrc or .bash_profile depends on which shell you're using.
If you know for sure you don't need more than one version of Ruby at the same time (besides the one that came with macOS) [NOT RECOMMENDED]
Even if you think you won't need another version now, you will eventually and you won't be able to easily switch. This will cause confusion and headaches, which is why I don't recommend installing and managing Ruby with Homebrew.
If you choose to use Homebrew to install Ruby despite my warnings, you'll be on your own if you run into any issues.
Install ruby with Homebrew:
brew install ruby
Then update your PATH by running this command:
echo 'export PATH="/usr/local/opt/ruby/bin:/usr/local/lib/ruby/gems/3.1.0/bin:$PATH"' >> ~/.zshrc
The 3.1.0 in the command above assumes Homebrew installed a Ruby version that starts with 3.1. If it installed a different version, replace 3.1 with the first two digits of your Ruby version.
If you're on an M1/M2 Mac, replace /usr/local with /opt/homebrew
Then "refresh" your shell for these changes to take effect:
source ~/.zshrc
Or you can open a new terminal tab, or quit and restart Terminal.
Replace .zshrc with .bash_profile if you are using Bash. If you're not sure, read my guide to find out which shell you're using.
To check that you're now using the non-system version of Ruby, you can run the following commands:
which ruby
It should not be /usr/bin/ruby
ruby -v
It should be 3.1.3 or later.
Once you have this new version of Ruby installed, you can now install bundler (or any other gem):
gem install bundler
Worked for me using the parameter --user-install running following command:
gem install name_of_gem --user-install
Edit
There was one gem I still could not install (it required the Ruby.h headers of the Ruby development kit or something), then I tried the different version managers, but somehow that still did not really work as it was stated in the documentations how to just install and switch (it did just not switch the versions).
Then I removed all the installed version managers and installed afterwards with brew install ruby the latest version and did set the PATH variable, too. (It will be mentioned after the installation of ruby from brew), which worked.
If you don't want to run sudo then install ruby using homebrew
brew install ruby
export GEM_HOME="$HOME/.gem"
gem install rails
You may want to add export GEM_HOME="$HOME/.gem" to your ~/.bash_profile or .zshrc if you're using zsh
Note: RubyGems keeps old versions of gems, so feel free to do some cleaning after updating:
gem cleanup
Just export GEM_HOME:
export GEM_HOME="$HOME/.gem"
And then try:
gem install cocoapods
As #idleberg mentions, on Mac OS, it is best to install rbenv to avoid permissions errors when using manually installed ruby.
Installation
$ brew update
$ brew install rbenv
Add the following in .bashrc file:
eval "$(rbenv init -)"
Now, we can look at the list of ruby versions available for install
$ rbenv install -l
Install version 2.3.8 for example
$ rbenv install 2.3.8
Now we can use this ruby version globally
$ rbenv global 2.3.8
Finally run
$ rbenv rehash
$ which ruby
/Users/myuser/.rbenv/shims/ruby
$ ruby -v
ruby 2.3.7p456 (2018-03-28 revision 63024) [x86_64-darwin17]
Go for it
Now install bundler
$ gem install bundler
All done!
It's generally recommended to use a version manager like rbenv or rvm. Otherwise, installed Gems will be available as root for other users.
If you know what you're doing, you can use sudo gem install.
Try this:
sudo gem install cocoapods --user-install
Worked for me
PLEASE USE SUDO WITH CARE!!!!!! ONLY IF YOU KNOW WHAT YOU ARE DOING!!!!!!!!!!!!
I have faced same issue after install macOS Catalina. I had try below command and its working.
sudo gem update
Run this
$ rbenv init
# Load rbenv automatically by appending
# the following to ~/.zshrc:
eval "$(rbenv init -)"
Follow instructions, (in my case add to ~/.zshrc) ;)
Also important: Changes only take effect if you reboot your console. Two options
Enter source <modified file>
close and open again
Try 1 or 2
1 - $ gem install cocoapods
2 - $ sudo gem install cocoapods
if it doesn't work, then export GEM_HOME:
export GEM_HOME="$HOME/.gem"
And try again:
gem install cocoapods
Remember the oficial doc says you can use sudo (https://guides.cocoapods.org/using/getting-started.html#getting-started).
To fix this, I ran
brew reinstall ruby
which showed me this message
==> Caveats
==> ruby
By default, binaries installed by gem will be placed into:
/opt/homebrew/lib/ruby/gems/3.1.0/bin
You may want to add this to your PATH.
ruby is keg-only, which means it was not symlinked into /opt/homebrew,
because macOS already provides this software and installing another version in
parallel can cause all kinds of trouble.
If you need to have ruby first in your PATH, run:
echo 'export PATH="/opt/homebrew/opt/ruby/bin:$PATH"' >> ~/.profile
So I added these two lines to my ~/.bashrc file
export PATH="/opt/homebrew/opt/ruby/bin:$PATH"
export PATH="/opt/homebrew/lib/ruby/gems/3.1.0/bin:$PATH"
Then I opened a new Terminal.app window and ran my gem install command again and it worked.
Tested on M1 MacBook Air (assuming Homebrew installed)
Following to the top answer, we can run:
brew install chruby ruby-install
To install the latest stable ruby:
ruby-install ruby
Then get the version number by running:
chruby
In your ~/.zshrc file:
export PATH=/opt/homebrew/bin:$PATH
source /opt/homebrew/opt/chruby/share/chruby/chruby.sh
source /opt/homebrew/opt/chruby/share/chruby/auto.sh
chruby 3.1.2
The "3.1.2" is the output I got when running chruby. Make sure you add that one line at the end.
Remember to restart the terminal each time you install a new gem.
If you have installed ruby separately and installed ruby using rbenv/rvm you budler might point to different versions.
try
gem env home
and
ruby -v
both should point to same version.check you have installed ruby using rbenv/rvm, If so delete the ruby version you installed separately.
In order for gem to work, you must invoke rbenv,
rbenv shell <ruby version>
and
rbenv global <ruby version>
I am not sure how RVM works.
Let me know if this works.
After install rbenv ,I also have this problem , add this line in my .bashrc :
eval "$(rbenv init -)"
solved my problem.
You don't have write permissions for the /Library/Ruby/Gems/2.3.0 directory.
In my case, the issue was related to ruby access some how the ruby path was messed up in my system.
The below steps helped me resolve the problem
Open the terminal
Install ruby using homebrew
[for fresh install] brew install ruby
[for reinstalling] brew reinstall ruby
Check the path of ruby using the below command
which ruby
It should be installed in the below path
/usr/bin/ruby
To change the ruby path to the user path
To check which shell is used by your system
echo $0
-zsh
For zshrc
echo 'export PATH="/usr/local/opt/ruby/bin:$PATH"' >>~/.zshrc
For bash
echo 'export PATH="/usr/local/opt/ruby/bin:$PATH"' >>~/~/.bashrc
Quit and relaunch the terminal
After changing the path with step 5
Check for the path of the ruby again (execute step 3 - please make sure the path displays as given below)
/usr/local/opt/ruby/bin/ruby
[if you don't quit and launch the terminal, step 4 path will be shown]
This step may not be applicable to everyone can skip step 10 & 11, if you have the correct Cocoapods version installed
Check the version of the pod installed
pod --version
Uninstall the specific version of Cocoapods using the below command
In case the version installed is 1.11.0
gem uninstall cocoapods -v 1.11.0
Install the Cocoapods of the specific version
gem install cocoapods -v 1.11.0
Change the path to the Project directory cd {path of the project directory}
Install the bundler in the project directory
bundle install
Execute pod install
pod install
I deleted those directories by using the below command
sudo rm -rf \
/Library/Ruby/Gems/2.6.0/{build_info,cache,doc,extensions,gems} \
/Library/Ruby/Gems/2.6.0/specifications/*.gemspec \
/Library/Ruby/Site
then installed cocoa pods using sudo gem install cocoapods
and it worked for me. Thanks
TL;DR
In several occasions, I've solved this kind of errors by just closing my terminal session and opening a new one before retrying the failing command.
Long explanation
In some SOs (such as MacOS) there is already a pre-installed, system-wide version of ruby. If you are using a version manager, such as rbenv or asdf, they work by playing with the environment of your current session so that the relevant commands point to the binaries installed by the version manager.
When installing a new binary, the version manager installs it in a special location, usually somewhere under the user's home directory. It then configures everything in your PATH so that you get the freshly installed binaries when you issue a command, instead of the ones that came with your system. However, if you don't restart the session (there are other ways of getting your environment updated, but that's the easiest one) you don't get the new configuration and you will be using the original installation.
Had the same error because I forgot to run the following after installing ruby:
source ~/.zshrc - or other ~/...rc file depending on your terminal
rbenv global 2.6.3 helped me solve this problem.
A different installation of ruby should be used. I use rbenv for that purpose.
# install your version of ruby
$ rbenv install 2.0.0-p247
# modify .ruby_version on current directory
$ rbenv local 2.0.0-p247
# proceed installing gems
$ gem install bundler
Disclamer: I am not a ruby person. This worked for me and if you are a ruby expert and see things to change in this answer, please, go ahead or comment!
I was using the below command to install fastlane but didn't worked
gem install fastlane -NV
So using sudo to install gems worked for me and it would be like
sudo gem install fastlane -NV
I try it, and work to me
export PATH=/opt/homebrew/opt/ruby/bin:/opt/homebrew/lib/ruby/gems/3.0.0/bin:$PATH
export LDFLAGS="-L/opt/homebrew/opt/ruby/lib"
export CPPFLAGS="-I/opt/homebrew/opt/ruby/include"
gem install ffi
For latest OS versions
First run sudo xcode-select --switch /
sudo gem install cocoapods --user-install
this did it for me
for Mac OS 12 and above also for 13
Xcode 14 and above
first you call
export GEM_HOME="$HOME/.gem"
after that
gem install cocoapods
home its help you ☺️
Solution for Mac
Install/update RVM with last ruby version
\curl -sSL https://get.rvm.io | bash -s stable
Install bundler
gem install bundler
after this two commands (sudo) gem install .... started to work
Solution for MAC. run the command
sudo gem update
then type your Mac password when prompted
After trying the previous approaches, this worked for me on Big Sur:
sudo gem install -n /usr/local/bin cocoapods
Install homebrew by passing this into your terminal
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
Install cocoapods using brew
brew install cocoapods
After install ruby with rbenv you also need to set global ruby. For that you can do like, rbenv global 3.2.1 then install bundler with gem install bundler. It will work.
This worked for me on Mac
sudo chown -R $(whoami) $(brew --prefix)/*

Bundle command not found mac

I'm using ruby, and I was given a zip file with some ruby programs and it says: inside the folder, run bundle install to install the packages required.
When I run the command in my terminal, it says bundle command not found.
Can someone please give me a detailed description of how I can fix this?
gem install bundler
is how to do it.
You may want to use a tool such as rbenv to manage gems.
Just reiterating that for those (at least on OSX) for whom
gem install bundler
Gives a permissions error, an option that seems to have worked for many people is to use rbenv, which kind of adds a shim between your ruby commands (like gem install) and your environment (if my understanding is correct).
Definitely check out this answer.
The process is laid out fairly well under the above link. I chose to install via homebrew:
brew update
brew install rbenv
Then you have to add an argument command to your profile, which if you're using the common ~/.bash_profile, can be done with:
echo 'eval "$(rbenv init -)"' >> ~/.bash_profile
Which it looks like is adding a command to initialize rbenv via your shell.
Don't for get to start a new shell, possibly by opening a new terminal or using the source ~/.bash_profile command.
Make sure your $PATH has this .rbenv/shims BEFORE any other directory where your shell might be looking for Ruby (OSX comes with it's own version that we don't want to fiddle with): echo $PATH.
which ruby
/Users/mikekilmer/.rbenv/shims/ruby
#GOOD!
Now install a version of Ruby:
rbenv install 2.2.3
(See all possible versions with rbenv install -l).
Now we can use rbenv global 2.2.3 to switch to a use the newer version of Ruby globally. (Hmm. I thought we didn't want to mess with the system version.) You could also try it with rbenv local 2.2.3 or rbenv shell 2.2.3.
Finally run:
rbenv rehash
Now ruby -v should return 2.2.3 and gem install bundler should work.
Did here.
Just run gem install bundler in your terminal.
There is a link to bundler you can take a look:bundler
Some ruby version managers like chruby and rbenv store gems separately for each version, so when you install a different version of ruby, you'll need to gem install bundler.
Tried every solution here but didn't work out. Eventually I got this to work in two different methods:
Set alias bundle=/path/to/bundle in .bashrc if you don't care the nastiness.
Recreate a fresh dev env via rbenv and do bundle install rails will fix it (fixed my issue).
Terminal -
sudo su
then your password:
change directory :
cd command .
if you do not have permissions to write to drive.
chmod 755 foldername.
And you can also mkdir command in terminal
mkdir /Library/Ruby/Gems/2.3.0.1
copy and paste: gem install bundler paste to the terminal.
Fetching: bundler-1.16.2.gem (100%)
bundler's executable "bundle" conflicts with /usr/local/bin/bundle
Overwrite the executable? [yN] y
bundler's executable "bundler" conflicts with /usr/local/bin/bundler
Overwrite the executable? [yN] y
Successfully installed bundler-1.16.2
Parsing documentation for bundler-1.16.2
Installing ri documentation for bundler-1.16.2
Done installing documentation for bundler after 7 seconds
1 gem installed
works for OS X High Sierra.

Updating to Ruby 1.9.2 on Leopard 10.5.8 using RVM

There seems to be a lot documented on migrating to 1.9.2 via snow leopard but not a lot on Leopard specifically.
running Mac OS X Leopard 10.5.8
rvm 1.6.3
xcode 3.1.4
I had a hard time installing rvm to begin with- but used this fix and got rvm installed. I type:
$ rvmsudo rvm install ruby-1.9.2-head
Install of ruby-1.9.2-head - #complete
(I get a failure if I try install without a sudo command) To switch default versions:
$ rvmsudo rvm --default use ruby-1.9.2-head
Using /usr/local/rvm/gems/ruby-1.9.2-head
$ ruby -v
ruby 1.8.7 (2011-02-18 patchlevel 334) [i686-darwin9]
When I set it as the default without a sudo command.
rvm --default use ruby-1.9.2-head
I get an error log that ends with:
cp: /usr/local/rvm/bin/rdoc: Permission denied
cp: /usr/local/rvm/bin/ri: Permission denied
cp: /usr/local/rvm/bin/ruby: Permission denied
cp: /usr/local/rvm/bin/testrb: Permission denied
Then I type
$ ruby -v
ruby 1.9.2p188 (2011-03-28 revision 31204) [i386-darwin9.8.0]
But when I close out terminal and reopen it is back to 1.8.7
Any ideas on how to get this ruby install to stick as my default?
Here is my bash profile
PS1="\u$ "
alias ll="ls -lahG"
export PATH="/usr/local/rvm/rubies/ruby-1.9.2-head/bin:/usr/local/bin:/usr/loca$
[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" # This loa$
##
# Your previous /Users/mikalfm/.bash_profile file was backed up as /Users/mikal$
##
# MacPorts Installer addition on 2011-04-23_at_21:38:56: adding an appropriate $
export PATH=/opt/local/bin:/opt/local/sbin:$PATH
# Finished adapting your PATH environment variable for use with MacPorts.
# MacPorts Installer addition on 2011-04-23_at_21:38:56: adding an appropriate $
export MANPATH=/opt/local/share/man:$MANPATH
# Finished adapting your MANPATH environment variable for use with MacPorts.
UPDATE
Solved.
I went to the file location from 'which ruby' (the 1.8.7 version)
Backed up the file and deleted it.
Now ruby -v returns
ruby 1.9.2p188 (2011-03-28 revision 31204) [i386-darwin9.8.0]
See comment below about why this was a bad idea.
Update 2
Solved, Really Unless of course I did something dumb.
So after following the instructions from the thread- I cleared up all of the Sudo issues in the original question. I did it by uninstalling RVM using an implode command, removing the folder and reinstalling without using any sudo commands.
The following problem was I could force rvm to use 1.9.2 as a default for only one session at a time. I just fixed this by reading this stackthread force rails to use 1.9.2 in it someone proposed using the $ echo $PATH command. I did it and it looked fundamentally different than what I thought was in my bash profile.
It looked like
/opt/local/bin:/opt/local/sbin:/usr/local/bin:/usr/local/sbin:/usr/local/mysql/bin:/Users/mikalfm/.rvm/gems/ruby-1.9.2-p180/bin:/Users/mikalfm/.rvm/gems/ruby-1.9.2-p180#global/bin:/Users/mikalfm/.rvm/rubies/ruby-1.9.2-p180/bin:/Users/mikalfm/.rvm/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin:/usr/local/git/bin
Turns out, I thought a few lines in my .bash_profile were commented out by ## and weren't.
export PATH=/opt/local/bin:/opt/local/sbin:$PATH and export MANPATH=/opt/local/share/man:$MANPATH. They directly contradict what I thought was my $PATH export PATH="/usr/local/bin:/usr/local/sbin:/usr/local/mysql/bin:$PATH"
I deleted those lines from my profile. I figure I can add them back in if and when there is a dependency and I need to use Mac Ports again. Again, some one let me know if this is the wrong approach, but it works for me now even when I start a new terminal.
Solved. I went to the file location from 'which ruby' (the 1.8.7 version) Backed up the file and deleted it. Now ruby -v returns ruby 1.9.2p188 (2011-03-28 revision 31204) [i386-darwin9.8.0]
NO NO NO!
The version of Ruby installed by Mac OS in /usr is owned by Apple and installed for their use. Applications installed by Apple use it, and you could have broken them.
If you run find /usr -name '*.rb' you'll find a number of files used by Apple, that are not part of the normal Ruby install.
It's not a problem of 10.5, I use it on my MB pro too. You need to learn to stop using sudo, when you do your not in scope of 'Mikal' anymore. I seldom have to use that anymore.
I'm not too familiar with rvmsudo. What happens when you do
rvm list
rvmsudo rvm list
?
My advice, uninstall rvm installed as root (with sudo), re-try and follow the guide at rvm.beginrescued.com
remove the PATH ruby1.9.2/bin from .bash_profile to avoid confusion. Let rvm handle it, and stay off sudo and rvmsudo (I've never used the latter).
rvm install 1.9.2
rvm use 1.9.2 --default
rvm list #see your rubies
should be sufficient. Hope it helps.
maybe you should just add:
rvm use 1.9.2
to your .bash_profile file :)

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