Ruby with RVM or RBenv on macOS

Switch among multiple versions of Ruby

                       

Overview

• Versions
• What Ruby version is installed?
• Gem version numbers
  • Update RubyGems and Bundler:
• Update Bundler:
  • Install rbenv
  • Uninstall rbenv
• Install to /usr/local/bin
• rbenv vs rvm
• Ruby Version Manager (rvm)
  • Install RVM
  • View rvm version number
  • Secure route:
  • Get latest version of Ruby
  • Uninstall Ruby
• To upgrade Ruby using RVM
• Sample Ruby Tree program
• Remove rvm
• Ruby apps on Mac
• Resources:
• More on OSX

The major commands around Ruby:

1. ruby
2. gem
3. bundle
4. rbenv version manager or
5. rvm version manager

PROTIP: There is a war going on within the Ruby community between rvm and rbenv. See http://jonathan-jackson.net/rvm-and-rbenv and Ryan McGeary who switched to rbenv.

Versions

1. Look at the list of Ruby versions at

   https://www.ruby-lang.org/en/downloads

2. Remember the lastest version number (such as “2.7.1”).

   What Ruby version is installed?

   A Ruby language compiler is included in Mac OSX. So we can jump straight to view version information.

   CAUTION: Don’t touch the system Ruby that comes with your Mac.

3. Open a Terminal Shell Window and type:

   ruby --version
   

   Alternately:

   ruby --version
   

   The response for the High Sierra default:

   ruby 2.3.7p456 (2018-03-28 revision 63024) [universal.x86_64-darwin17] ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-darwin17] </tt>

   The response for the Sierra default:

   ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-darwin15]

   The response for the Yosemite default:

   ruby 2.0.0p481 (2014-05-08 revision 45883) [universal.x86_64-darwin14]

   The response after updating on 2016-06-16:

   ruby 2.3.1p112 (2016-04-26 revision 54768) [x86_64-darwin15]

   CAUTION: The Apple Mac operating system makes use of Ruby, so don’t delete the .rvm folder.

4. This should return “hey”:

   ruby -e "puts 'hey'"
   

   PROTIP: The ruby command by itself will not return anything … forever.

   Gem version numbers

5. You don’t really need to do the above because this more detailed command provides it as well:

   gem env
   

   The response on 2016-06-16:

   RubyGems Environment:
            - RUBYGEMS VERSION: 2.6.4
            - RUBY VERSION: 2.3.1 (2016-04-26 patchlevel 112) [x86_64-darwin15]
            - INSTALLATION DIRECTORY: /Users/mac/.rvm/gems/ruby-2.3.1
            - USER INSTALLATION DIRECTORY: /Users/mac/.gem/ruby/2.3.0
            - RUBY EXECUTABLE: /Users/mac/.rvm/rubies/ruby-2.3.1/bin/ruby
            - EXECUTABLE DIRECTORY: /Users/mac/.rvm/gems/ruby-2.3.1/bin
            - SPEC CACHE DIRECTORY: /Users/mac/.gem/specs
            - SYSTEM CONFIGURATION DIRECTORY: /Users/mac/.rvm/rubies/ruby-2.3.1/etc
            - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-darwin-15
            - GEM PATHS:
     - /Users/mac/.rvm/gems/ruby-2.3.1
     - /Users/mac/.rvm/gems/ruby-2.3.1@global
            - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :backtrace => false
     - :bulk_threshold => 1000
            - REMOTE SOURCES:
     - https://rubygems.org/
            - SHELL PATH:
     - /Users/mac/.rvm/gems/ruby-2.3.1/bin
     - /Users/mac/.rvm/gems/ruby-2.3.1@global/bin
     - /Users/mac/.rvm/rubies/ruby-2.3.1/bin
     - /Users/mac/depot_tools
     - /Users/mac/.npm-packages/bin
     - /Users/mac/miniconda2/bin
     - /Users/mac/.rbenv/shims
     - /Users/mac/.rbenv/bin
     - /usr/local/bin
     - /usr/bin
     - /bin
     - /usr/sbin
     - /sbin
     - /Users/mac/gits
     - /Users/mac/.rvm/bin
     - /Users/mac/.rvm/bin
   

6. To view each component individually:

   gem --version
   

   The response for the High Sierra default:

   2.7.6

   The response for the Sierra default:

   2.0.14

   The response for the Yosemite default:

   2.0.14

   After updating on 2017-02-16:

   2.6.10

   QUESTION: List of versions?

   Update RubyGems and Bundler:

7. Update:

   
   sudo gem update --system
   

   The response on 2016-06-16:

   Password:
   Updating rubygems-update
   Fetching: rubygems-update-2.6.4.gem (100%)
   Successfully installed rubygems-update-2.6.4
   Parsing documentation for rubygems-update-2.6.4
   Installing ri documentation for rubygems-update-2.6.4
   Installing darkfish documentation for rubygems-update-2.6.4
   Done installing documentation for rubygems-update after 2 seconds
   Parsing documentation for rubygems-update-2.6.4
   Done installing documentation for rubygems-update after 0 seconds
   Installing RubyGems 2.6.4
   RubyGems 2.6.4 installed
   Parsing documentation for rubygems-2.6.4
   Installing ri documentation for rubygems-2.6.4
    
   === 2.6.3 / 2016-04-05
   ...
   Minor enhancements:
   ...
   Bug fixes:
   ...
   RubyGems installed the following executables:
   /Users/mac/.rvm/rubies/ruby-2.3.1/bin/gem
    
   Ruby Interactive (ri) documentation was installed. ri is kind of like man 
   pages for ruby libraries. You may access it like this:
     ri Classname
     ri Classname.class_method
     ri Classname#instance_method
   If you do not wish to install this documentation in the future, use the
   --no-document flag, or set it as the default in your ~/.gemrc file. See
   'gem help env' for details.
    
   RubyGems system software updated
   

8. List local gems:

   gem list b
   

   A sample example (on 2016-06-16):

   bigdecimal (1.3.1, 1.2.7, default: 1.2.0)
   libxml-ruby (3.0.0, 2.8.0, 2.6.0)
   rainbow (2.2.1, 2.1.0)
   rubocop (0.47.1, 0.40.0)
   bundler-unload (1.0.2)
   executable-hooks (1.3.2)
   rubygems-bundler (1.4.4)
   ruby-progressbar (1.8.1)
   rubygems-update (2.6.10, 2.6.9, 2.6.1)
   ...
   

   Update Bundler:

9. If bundler is not on the list above:

   gem install bundler
   

   A sample response:

   Fetching: bundler-1.12.5.gem (100%)
   Successfully installed bundler-1.12.5
   Parsing documentation for bundler-1.12.5
   Installing ri documentation for bundler-1.12.5
   Done installing documentation for bundler after 5 seconds
   1 gem installed
   

10. Navigate to a folder containing :

    bundle install
    

    A sample response:

    Fetching gem metadata from https://rubygems.org/
    Fetching version metadata from https://rubygems.org/
    Fetching dependency metadata from https://rubygems.org/
    Installing rake 11.1.2
    ...
    Bundle complete! 5 Gemfile dependencies, 39 gems now installed.
    Use `bundle show [gemname]` to see where a bundled gem is installed.
    

11. Run

    sudo gem install --no-rdoc --no-ri bundler

    The response:

    Fetching: bundler-1.9.4.gem (100%)
    Successfully installed bundler-1.9.4
    1 gem installed
    

12. Update latest version of gem:

    sudo gem update
    

    The response takes several minutes because it touches every gem:

       Updating installed gems
    Updating CFPropertyList
    ...
    RubyGems installed the following executables:
      /usr/local/Cellar/ruby/2.5.1/bin/gem
      /usr/local/Cellar/ruby/2.5.1/bin/bundle
     
    Ruby Interactive (ri) documentation was installed. ri is kind of like man 
    pages for Ruby libraries. You may access it like this:
      ri Classname
      ri Classname.class_method
      ri Classname#instance_method
    If you do not wish to install this documentation in the future, use the
    --no-document flag, or set it as the default in your ~/.gemrc file. See
    'gem help env' for details.
     
    RubyGems system software updated
    

13. Press y and Enter if you see:

    rake's executable "rake" conflicts with /usr/bin/rake
    rdoc's executable "rdoc" conflicts with /usr/bin/rdoc
    rdoc's executable "ri" conflicts with /usr/bin/ri
    

14. To rebuild any gems using native extensions:

    sudo gem pristine \-\-all 
    

15. To uninstall gems not used:

    sudo gem cleanup
    

    The response:

    Cleaning up installed gems...
    Clean Up Complete
    

Install rbenv

CAUTION: To install rbenv, one must first remove RVM because it’s incompatible with rbenv.

brew update
   brew install rbenv ruby-build
   

The response:

==> Installing dependencies for rbenv: openssl, ruby-build
==> Installing rbenv dependency: openssl
==> Downloading https://homebrew.bintray.com/bottles/openssl-1.0.2k.sierra.bottl
######################################################################## 100.0%
==> Pouring openssl-1.0.2k.sierra.bottle.tar.gz
==> Using the sandbox
==> Caveats
A CA file has been bootstrapped using certificates from the SystemRoots
keychain. To add additional certificates (e.g. the certificates added in
the System keychain), place .pem files in
  /usr/local/etc/openssl/certs
 
and run
  /usr/local/opt/openssl/bin/c_rehash
 
This formula is keg-only, which means it was not symlinked into /usr/local.
 
Apple has deprecated use of OpenSSL in favor of its own TLS and crypto libraries
 
If you need to have this software first in your PATH run:
  echo 'export PATH="/usr/local/opt/openssl/bin:$PATH"' >> ~/.bash_profile
 
For compilers to find this software you may need to set:
    LDFLAGS:  -L/usr/local/opt/openssl/lib
    CPPFLAGS: -I/usr/local/opt/openssl/include
For pkg-config to find this software you may need to set:
    PKG_CONFIG_PATH: /usr/local/opt/openssl/lib/pkgconfig
 
==> Summary
🍺  /usr/local/Cellar/openssl/1.0.2k: 1,696 files, 12M
==> Installing rbenv dependency: ruby-build
==> Downloading https://github.com/rbenv/ruby-build/archive/v20170201.tar.gz
==> Downloading from https://codeload.github.com/rbenv/ruby-build/tar.gz/v201702
######################################################################## 100.0%
==> ./install.sh
🍺  /usr/local/Cellar/ruby-build/20170201: 334 files, 178.8K, built in 4 seconds
==> Installing rbenv 
==> Downloading https://homebrew.bintray.com/bottles/rbenv-1.1.0.sierra.bottle.t
######################################################################## 100.0%
==> Pouring rbenv-1.1.0.sierra.bottle.tar.gz
🍺  /usr/local/Cellar/rbenv/1.1.0: 36 files, 63.2K
   

1. What versions of Ruby are available? See https://www.ruby-lang.org/en/downloads/releases/

2. To upgrade Ruby using rbenv, first get the semantic version from the Ruby site, then:

   rbenv install 2.6.1
   

   The response when 2.6.1 was all the rage:

   ruby-build: use openssl from homebrew
   Downloading ruby-2.6.1.tar.bz2...
   -> https://cache.ruby-lang.org/pub/ruby/2.6/ruby-2.6.1.tar.bz2
   Installing ruby-2.6.1...
   ruby-build: use readline from homebrew
   Installed ruby-2.6.1 to /Users/wilsonmar/.rbenv/versions/2.6.1
   

3. Make that version the default globally:

   rbenv global 2.6.1
   ruby -v
   

   The response I got:

   ruby 2.6.1p33 (2019-01-30 revision 66950) [x86_64-darwin18]

   Uninstall rbenv

4. To uninstall, remember rbenv was installed using brew, so:

   brew uninstall rbenv ruby-build
   

Install to /usr/local/bin

“You don’t have write permissions into the /usr/bin directory.” is returned because that directory requires root credentials.

This is why Homebrew installs into the /usr/local/bin folder.

To specify that folder when installing gems, for example:

gem install cocoapods -n /usr/local/bin

PROTIP: To automatically specify -n /usr/local/bin, save create file ~/.gemrc containing:

:gemdir:
   - ~/.gem/ruby
install: -n /usr/local/bin
   

---

rbenv vs rvm

Before rbenv, there was rvm.

This article describes the differences.

PROTIP: Personally, the requirement for gpg to install was a turn-off for RVM as it was difficult to get working.

Ruby Version Manager (rvm)

See https://rvm.io/support/troubleshooting

Install RVM

1. In a Terminal:

   curl -L https://get.rvm.io | bash -s stable

   Sample response:

     % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
   100   194  100   194    0     0    544      0 --:--:-- --:--:-- --:--:--   544
   100 24361  100 24361    0     0  31643      0 --:--:-- --:--:-- --:--:-- 1076k
   Downloading https://github.com/rvm/rvm/archive/1.29.4.tar.gz
   Downloading https://github.com/rvm/rvm/releases/download/1.29.4/1.29.4.tar.gz.asc
   gpg: Signature made Sun Jul  1 13:41:26 2018 MDT
   gpg:                using RSA key 62C9E5F4DA300D94AC36166BE206C29FBF04FF17
   gpg: Good signature from "Michal Papis (RVM signing) <mpapis@gmail.com>" [unknown]
   gpg:                 aka "Michal Papis <michal.papis@toptal.com>" [unknown]
   gpg:                 aka "[jpeg image of size 5015]" [unknown]
   gpg: WARNING: This key is not certified with a trusted signature!
   gpg:          There is no indication that the signature belongs to the owner.
   Primary key fingerprint: 409B 6B17 96C2 7546 2A17  0311 3804 BB82 D39D C0E3
     Subkey fingerprint: 62C9 E5F4 DA30 0D94 AC36  166B E206 C29F BF04 FF17
   GPG verified '/Users/wilsonmar/.rvm/archives/rvm-1.29.4.tgz'
   Upgrading the RVM installation in /Users/wilsonmar/.rvm/
    RVM PATH line found in /Users/wilsonmar/.mkshrc /Users/wilsonmar/.profile /Users/wilsonmar/.bashrc /Users/wilsonmar/.zshrc.
    RVM sourcing line found in /Users/wilsonmar/.profile /Users/wilsonmar/.bash_profile /Users/wilsonmar/.zlogin.
   Upgrade of RVM in /Users/wilsonmar/.rvm/ is complete.
   /Users/wilsonmar/.bash_profile:1:PATH=/usr/local/bin/python3:/usr/bin/python:/usr/local/bin:/usr/bin:/usr/sbin:/bin:/sbin:/opt/local/bin:/opt/local/sbin:/usr/local/share/dotnet
    
            * WARNING: Above files contains PATH= with no $PATH inside, this can break RVM,
    for details check https://github.com/rvm/rvm/issues/1351#issuecomment-10939525
    to avoid this warning prepend $PATH
    
            * No new notes to display.
   

   View rvm version number

   rvm info
   

2. For a smaller response:

   rvm --version
   

   The response on 2018-10-26:

   rvm 1.29.4 (latest) by Michal Papis, Piotr Kuczynski, Wayne E. Seguin [https://rvm.io]
   

   The response on 2016-06-16 had an email:

   rvm 1.27.0 (master) by Wayne E. Seguin <wayneeseguin@gmail.com>, Michal Papis <mpapis@gmail.com> [https://rvm.io/]
   

Secure route:

See https://rvm.io/rvm/security

1. First try:

   gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
   

   The response I got:

   gpg: keyserver receive failed: Server indicated a failure
   

2. Alternatively, Since that doesn’t work:

   curl -sSL https://rvm.io/mpapis.asc | gpg --import -
   

   gpg: key 3804BB82D39DC0E3: 47 signatures not checked due to missing keys
   gpg: key 3804BB82D39DC0E3: public key "Michal Papis (RVM signing) <mpapis@gmail.com>" imported
   gpg: Total number processed: 1
   gpg:               imported: 1
   gpg: marginals needed: 3  completes needed: 1  trust model: pgp
   gpg: depth: 0  valid:   2  signed:   0  trust: 0-, 0q, 0n, 0m, 0f, 2u
   

3. Download:

   \curl -O https://raw.githubusercontent.com/rvm/rvm/master/binscripts/rvm-installer

     % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
   100 24361  100 24361    0     0  72332      0 --:--:-- --:--:-- --:--:-- 72502
   

4. Download:

   \curl -O https://raw.githubusercontent.com/rvm/rvm/master/binscripts/rvm-installer.asc

     % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
   100   833  100   833    0     0   3368      0 --:--:-- --:--:-- --:--:--  3372
   

5. Verify:

    gpg --verify rvm-installer.asc

   gpg: assuming signed data in 'rvm-installer'
   gpg: Signature made Sat Mar 31 15:47:44 2018 MDT
   gpg:                using RSA key 62C9E5F4DA300D94AC36166BE206C29FBF04FF17
   gpg: Good signature from "Michal Papis (RVM signing) <mpapis@gmail.com>" [unknown]
   gpg:                 aka "Michal Papis <michal.papis@toptal.com>" [unknown]
   gpg:                 aka "[jpeg image of size 5015]" [unknown]
   gpg: WARNING: This key is not certified with a trusted signature!
   gpg:          There is no indication that the signature belongs to the owner.
   Primary key fingerprint: 409B 6B17 96C2 7546 2A17  0311 3804 BB82 D39D C0E3
     Subkey fingerprint: 62C9 E5F4 DA30 0D94 AC36  166B E206 C29F BF04 FF17
   

6. Get on the latest version of RVM:

   bash rvm-installer stable

   The response run on 2018-06-22:

   Downloading https://github.com/rvm/rvm/archive/1.29.3.tar.gz
   Downloading https://github.com/rvm/rvm/releases/download/1.29.3/1.29.3.tar.gz.asc
   gpg: Signature made Sun Sep 10 14:59:21 2017 MDT
   gpg:                using RSA key E206C29FBF04FF17
   gpg: Good signature from "Michal Papis (RVM signing) <mpapis@gmail.com>" [unknown]
   gpg:                 aka "Michal Papis <michal.papis@toptal.com>" [unknown]
   gpg:                 aka "[jpeg image of size 5015]" [unknown]
   gpg: WARNING: This key is not certified with a trusted signature!
   gpg:          There is no indication that the signature belongs to the owner.
   Primary key fingerprint: 409B 6B17 96C2 7546 2A17  0311 3804 BB82 D39D C0E3
     Subkey fingerprint: 62C9 E5F4 DA30 0D94 AC36  166B E206 C29F BF04 FF17
   GPG verified '/Users/wilsonmar/.rvm/archives/rvm-1.29.3.tgz'
    
   Installing RVM to /Users/wilsonmar/.rvm/
    Adding rvm PATH line to /Users/wilsonmar/.profile /Users/wilsonmar/.mkshrc /Users/wilsonmar/.bashrc /Users/wilsonmar/.zshrc.
    Adding rvm loading line to /Users/wilsonmar/.profile /Users/wilsonmar/.bash_profile /Users/wilsonmar/.zlogin.
   Installation of RVM in /Users/wilsonmar/.rvm/ is almost complete:
    
            * To start using RVM you need to run `source /Users/wilsonmar/.rvm/scripts/rvm`
    in all your open shell windows, in rare cases you need to reopen all shell windows.
   /Users/wilsonmar/.bash_profile:1:PATH=/usr/bin/python:/usr/local/bin:/usr/bin:/usr/sbin:/bin:/sbin:/opt/local/bin:/opt/local/sbin:/usr/local/share/dotnet
    
            * WARNING: Above files contains `PATH=` with no `$PATH` inside, this can break RVM,
    for details check https://github.com/rvm/rvm/issues/1351#issuecomment-10939525
    to avoid this warning prepend `$PATH`.
   

7. Do as instructed:

   source /Users/wilsonmar/.rvm/scripts/rvm

   No response is returned.

   Get latest version of Ruby

8. Get on the latest version of RVM:

   rvm get stable

   The response run on 2017-07-27:

   ownloading https://get.rvm.io
   Downloading https://raw.githubusercontent.com/rvm/rvm/master/binscripts/rvm-installer.asc
   Verifying /Users/mac/.rvm/archives/rvm-installer.asc
   gpg: Signature made Sun Jul  2 16:42:38 2017 EDT using RSA key ID BF04FF17
   gpg: Good signature from "Michal Papis (RVM signing) <mpapis@gmail.com>" [unknown]
   gpg: Note: This key has expired!
   Primary key fingerprint: 409B 6B17 96C2 7546 2A17  0311 3804 BB82 D39D C0E3
     Subkey fingerprint: 62C9 E5F4 DA30 0D94 AC36  166B E206 C29F BF04 FF17
   GPG verified '/Users/mac/.rvm/archives/rvm-installer'
   Downloading https://github.com/rvm/rvm/archive/1.29.2.tar.gz
   Downloading https://github.com/rvm/rvm/releases/download/1.29.2/1.29.2.tar.gz.asc
   gpg: Signature made Thu Jun 22 12:18:38 2017 EDT using RSA key ID BF04FF17
   gpg: Good signature from "Michal Papis (RVM signing) <mpapis@gmail.com>" [unknown]
   gpg: Note: This key has expired!
   Primary key fingerprint: 409B 6B17 96C2 7546 2A17  0311 3804 BB82 D39D C0E3
     Subkey fingerprint: 62C9 E5F4 DA30 0D94 AC36  166B E206 C29F BF04 FF17
   GPG verified '/Users/mac/.rvm/archives/rvm-1.29.2.tgz'
    
   Upgrading the RVM installation in /Users/mac/.rvm/
    RVM PATH line found in /Users/mac/.mkshrc /Users/mac/.profile /Users/mac/.bashrc /Users/mac/.zshrc.
    RVM sourcing line found in /Users/mac/.profile /Users/mac/.bash_profile /Users/mac/.zlogin.
   Upgrade of RVM in /Users/mac/.rvm/ is complete.
    
   # Wilson Mar,
   #
   #   Thank you for using RVM!
   #   We sincerely hope that RVM helps to make your life easier and more enjoyable!!!
   #
   # ~Wayne, Michal & team.
    
   In case of problems: https://rvm.io/help and https://twitter.com/rvm_io
    
   Upgrade Notes:
    
   /Users/mac/.bash_profile:1:PATH=/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/share/dotnet
    
            * WARNING: Above files contains `PATH=` with no `$PATH` inside, this can break RVM,
    for details check https://github.com/rvm/rvm/issues/1351#issuecomment-10939525
    to avoid this warning prepend `$PATH`.
    
            * No new notes to display.
    
   RVM reloaded!
   

   Uninstall Ruby

9. Uninstall all versions of Ruby:

   rvm uninstall ruby

10. Have the rvm shell configuration loaded:

    source ~/.rvm/scripts/rvm
    type rvm | head -n 1

    Alternately, wipe out the folder and start over:

    rm -rf ~/.rvm
    curl -L https://get.rvm.io | bash -s stable

    The response should be:

    rvm is a function

    If so, try rvm get head again.

    rvm get head

    If the response is:

    -bash: rvm: command not found
    

11. Get stable

    rvm get stable --auto-dotfiles
    

To upgrade Ruby using RVM

1. First run:

   rvm autolibs homebrew

2. Run:

   rvm install ruby

   The response:

   Searching for binary rubies, this might take some time.
   No binary rubies available for: osx/10.11/x86_64/ruby-2.3.1.
   Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.
   Checking requirements for osx_brew.
   Installing requirements for osx_brew.
   Updating system.....
   Installing required packages: autoconf, automake, libtool, readline, libksba, openssl........
   Certificates in '/usr/local/etc/openssl/cert.pem' are already up to date.
   Requirements installation successful.
   Installing Ruby from source to: /Users/mac/.rvm/rubies/ruby-2.3.1, this may take a while depending on your cpu(s)...
   ruby-2.3.1 - #downloading ruby-2.3.1, this may take a while depending on your connection...
     % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
   100 13.7M  100 13.7M    0     0   320k      0  0:00:44  0:00:44 --:--:--  266k
   perl: warning: Setting locale failed.
   perl: warning: Please check that your locale settings:
   LC_ALL = (unset),
   LC_CTYPE = "en_US.utf-",
   LANG = "en_US.UTF-8"
    are supported and installed on your system.
   perl: warning: Falling back to the standard locale ("C").
   ruby-2.3.1 - #extracting ruby-2.3.1 to /Users/mac/.rvm/src/ruby-2.3.1.....
   ruby-2.3.1 - #configuring......................................................|
   ruby-2.3.1 - #post-configuration.
   ruby-2.3.1 - #compiling........................................................-
   ruby-2.3.1 - #installing.........
   ruby-2.3.1 - #making binaries executable..
   Installed rubygems 2.5.1 is newer than 2.4.8 provided with installed ruby, skipping installation, use --force to force installation.
   ruby-2.3.1 - #gemset created /Users/mac/.rvm/gems/ruby-2.3.1@global
   ruby-2.3.1 - #importing gemset /Users/mac/.rvm/gemsets/global.gems.............|
   ruby-2.3.1 - #generating global wrappers........
   ruby-2.3.1 - #gemset created /Users/mac/.rvm/gems/ruby-2.3.1
   ruby-2.3.1 - #importing gemsetfile /Users/mac/.rvm/gemsets/default.gems evaluated to empty gem list
   ruby-2.3.1 - #generating default wrappers........
   ruby-2.3.1 - #adjusting #shebangs for (gem irb erb ri rdoc testrb rake).
   Install of ruby-2.3.1 - #complete 
   Ruby was built without documentation, to build it run: rvm docs generate-ri
   

3. View versions again.

4. To install the latest stable rvm release:

   curl -ssL https://get.rvm.io | bash -s stable

   A sample response:

   Downloading https://github.com/rvm/rvm/archive/1.26.11.tar.gz
   Downloading https://github.com/rvm/rvm/releases/download/1.26.11/1.26.11.tar.gz.asc
   Found PGP signature at: 'https://github.com/rvm/rvm/releases/download/1.26.11/1.26.11.tar.gz.asc',
   but no GPG software exists to validate it, skipping.
    
   Installing RVM to /Users/wilsonmar/.rvm/
   Adding rvm PATH line to /Users/wilsonmar/.profile /Users/wilsonmar/.mkshrc /Users/wilsonmar/.bashrc /Users/wilsonmar/.zshrc.
   Adding rvm loading line to /Users/wilsonmar/.profile /Users/wilsonmar/.bash_profile /Users/wilsonmar/.zlogin.
   Installation of RVM in /Users/wilsonmar/.rvm/ is almost complete:
    
          * To start using RVM you need to run `source /Users/wilsonmar/.rvm/scripts/rvm`
   in all your open shell windows, in rare cases you need to reopen all shell windows.
    
   # Wilson Mar,
   #
   #   Thank you for using RVM!
   #   We sincerely hope that RVM helps to make your life easier and more enjoyable!!!
   #
   # ~Wayne, Michal & team.
    
   In case of problems: http://rvm.io/help and https://twitter.com/rvm_io
    
          * WARNING: You have '~/.profile' file, you might want to load it,
   to do that add the following line to '/Users/wilsonmar/.bash_profile':
    
   source ~/.profile
   

5. Some say at this point close the terminal and open again.

Sample Ruby Tree program

Here is a Ruby script to produce a nice Unicode tree along with metadata to its left:

#!/usr/bin/env ruby
def tree_hierarchy( root, &children )
  queue = [[root,"",true]]
  [].tap do |results|
    until queue.empty?
      item,indent,last = queue.pop
      kids = children[item]
      extra = indent.empty? ? '' : last ? '└╴' : '├╴'
      results << [ indent+extra, item ]
      results << [ indent, nil ] if last and kids.empty?
      indent += last ? '  ' : '│ '
      parts = kids.map{ |k| [k,indent,false] }.reverse
      parts.first[2] = true unless parts.empty?
      queue.concat parts
    end
  end
end
def tree(dir)
  cols = tree_hierarchy(File.expand_path(dir)) do |d|
    File.directory?(d) ? Dir.chdir(d){ Dir['*'].map(&File.method(:expand_path)) } : []
  end.map do |indent,path|
    if path
      file = File.basename(path) + File.directory?(path) ? '/' : ''
      meta = `ls -lhd "#{path}"`.split(/\s+/)
      [ [indent,file].join, meta[0], meta[4], "%s %-2s %s" % meta[5..7] ]
    else
      [indent]
    end
  end
  maxs = cols.first.zip(*(cols[1..-1])).map{ |c| c.compact.map(&:length).max }
  tmpl = maxs.map.with_index{ |n,i| "%#{'-' if cols[0][i][/^\D/]}#{n}s" }.join('  ')
  cols.map{ |a| a.length==1 ? a.first : tmpl % a }
end
puts tree(ARGV.first || ".") if __FILE__==$0
   

1. Copy and paste the above into a text editor program.
2. Save the file named tree.rb.
3. In a Terminal window, navigate to the folder holding the script.

4. Mark the file as executable:

   chmod +x tree.rb

   This only needs to be done once.

5. Run the program:

   tree.rb

   ERROR: The response:

   ./tree.rb:24:in `+': no implicit conversion of true into String (TypeError)
     from ./tree.rb:24:in `block in tree'
     from ./tree.rb:22:in `map'
     from ./tree.rb:22:in `tree'
     from ./tree.rb:35:in `<main>'
   

   http://superuser.com/users/57219/phrogz

Remove rvm

1. Run the program which removes the rvm/ directory and all the rubies built within it:

   
   rvm repair
   rvm cleanup
   rvm implode --force
   

   Are you SURE you wish for rvm to implode?
   This will recursively remove /Users/wilsonmar/.rvm and other rvm traces?
   (anything other than 'yes' will cancel) > yes
   Removing rvm-shipped binaries (rvm-prompt, rvm, rvm-sudo rvm-shell and rvm-auto-ruby)
   Removing rvm wrappers in /Users/wilsonmar/.rvm/bin
   Hai! Removing /Users/wilsonmar/.rvm
   /Users/wilsonmar/.rvm has been removed.
    
   Note you may need to manually remove /etc/rvmrc and ~/.rvmrc if they exist still.
   Please check all .bashrc .bash_profile .profile and .zshrc for RVM source lines and delete or comment out if this was a Per-User installation.
   Also make sure to remove `rvm` group if this was a system installation.
   Finally it might help to relogin / restart if you want to have fresh environment (like for installing RVM again).
   

2. Remove folders:

   rm -rf /usr/local/rvm
   sudo rm /etc/profile.d/rvm.sh
   sudo rm /etc/rvmrc
   sudo rm ~/.rvmrc
   

3. Check references to rvm in files (replace vim with your favorite text editor command such as subl, code, etc.):

   vim ~/.bash_profile

   vim ~/.bashrc

   vim ~/.profile

4. Restart Terminal sessions.

   See http://karloespiritu.com/replacing-rvm-with-rbenv-in-os-x/

Ruby apps on Mac

The programs I’ve figured out how to install using my bash script:

• istats
• gitlab (command line utilities)
• ruby-jmeter
• travis
• rails
• rust (language)

Resources:

This also provides instructions on installation of Ruby:

https://gorails.com/setup/osx/10.14-mojave#ruby

http://www.createdbypete.com/articles/ruby-on-rails-development-setup-for-mac-osx/

https://www.digitalocean.com/community/tutorials/how-to-install-ruby-on-rails-with-rbenv-on-ubuntu-16-04

http://devopspy.com/linux/install-latest-ruby-using-rbenv/

More on OSX

This is one of a series on Mac OSX:

• MacOS Setup step-by-step, with automation
• MacOS Hardware and accessories
• MacOS dotfiles for System Preferences setup automation

• MacOS Homebrew installers

• MacOS Boot-up

• MacOS Versions

• MacOS Keyboard tricks
• MacOS Terminal Tips and Tricks

• MacOS Find (files and text in files)

• Text editors and IDEs on MacOS
• MacOS Xcode.app and CommandTools (gcc)
• MacOS Command-line utilities

• Task Runners Grunt and Gulp

• Applications on MacOS
• 1password on MacOS

• Data Backups on MacOS

• Manage Disk Space on MacOS
• Screen capture on MacOS

• Printing from macOS or Linux

• Ports open

• MacOS iPhone integration

• MacOS within AWS

• Linux and Windows on Apple MacOS
• Packer create Vagrant Windows image

• Remote into Windows

• Python on MacOS
• Maven on MacOS
• Ruby on MacOS
• Node on MacOS installation

• PHP on MacOS

• Java on MacOS
• Scala ecosystem

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