#MAC UPDATE RUBY ON RAILS INSTALL#
#MAC UPDATE RUBY ON RAILS SOFTWARE#
#MAC UPDATE RUBY ON RAILS CODE#
#MAC UPDATE RUBY ON RAILS MAC#

If not, prepare yourself by installing Ruby with Homebrew or a version manager. If you're reading this at the end of 2021, the system Ruby may already be gone.

#MAC UPDATE RUBY ON RAILS INSTALL#

Future versions of macOS wonРІР‚в„ўt include scripting language runtimes by default, and might require you to install additional packages.' Apple says: 'Scripting language runtimes such as Python, Ruby, and Perl are included in macOS for compatibility with legacy software. MacOS Big Sur is now the current version. When you start building another project, it may be time to install a version manager so you can juggle projects with different Ruby versions. If you're just starting with Ruby, install with Homebrew and work on a project with Ruby 3.0. The system Ruby in macOS Catalina or Big Sur is Ruby 2.6.3, which is old. When you start a project, use the newest Ruby release (it's 3.0 at the time this was written). But it's easier to install Ruby with Homebrew or use a version manager and use the Bundler that comes installed, which will correctly set up your local development environment. You can work around the systems permission problem by installing Bundler with a command that uses your home directory for gems. If you were to use sudo to install gems with the system Ruby, you'd end up with a mess of incompatible gems in the system Ruby directory. Or maybe two different gems in your project rely on different versions of a dependent gem.Р”В«undler uses a Gemfile in your project directory to keep track of the gems you need. Imagine you've got projects that use different versions of a gem (maybe there was a new gem release between your projects). Gem managementР”В®xperienced developers use Bundler to install gems and manage their dependencies.

#MAC UPDATE RUBY ON RAILS CODE#

Even worse, a gem might contain malicious code that tampers with your computer. Don't do it! You may leave the system in a broken or compromised state. In this case, you need sudo because you're altering system files that are managed by the OS.

But don't do this! $ sudo gem install railsР”Р„ny time you are about to run sudo, you should stop and ask if you're about to shoot yourself in the foot. You can install gems as a superuser to override the permissions restriction. Unix-based systems are powerful, so there's a workaround. You don't have write permissions for the /Library/Ruby/Gems/2.6.0 directory If you try to install a gem, for example gem install rails, you'll get a permissions error: ERROR: While executing gem.

Ordinary users are not allowed to write to it (and you really shouldn't alter this folder). That directory is owned by root, the system superuser.

#MAC UPDATE RUBY ON RAILS MAC#

If you use the Mac system Ruby, running gem install will try to save gems to the system Ruby directory /Library/Ruby/Gems/2.6.0. Most Ruby projects use at least a few gems.

#MAC UPDATE RUBY ON RAILS SOFTWARE#

RubyGems are the ready-made software libraries that make development easy and fun in Ruby. For a guide that compares version managers and shows the best way to install Ruby, see my article Install Ruby on a Mac.Р”В«ut why not use the macOS default Ruby? Let's take a look at the reasons why it's a bad idea to use the Mac default Ruby for development. Ruby for developmentР”Р‡or developing projects with Ruby, you should Install Ruby with Homebrew or use a version manager such as asdf, chruby, rbenv, or rvm.Р”Р„ version manager helps if you're juggling multiple projects and can't update all at once. It's fine to use the system Ruby for running sysadmin scripts, as long as you don't alter the system Ruby by attempting to update it or add gems.Р”В«ut you don't want to use it when you are developing projects in Ruby. If you see /usr/bin/ruby, it is the pre-installed macOS system Ruby. Use the which command to see where Ruby is installed: $ which ruby MacOS comes with a 'system Ruby' pre-installed.

Someone may have once told you, 'Don't use the system Ruby.' It's good advice, but why? Let's find out.

Mac update ruby on rails