自制软件安装Ruby Keg-only找不到gem

问题描述

使用Homebrew安装Ruby后，如何使irb工作?

How do I get irb to work after installing Ruby with Homebrew?

当我尝试运行irb时，出现错误:

When I try to run irb, I get an error:

$ irb
Traceback (most recent call last):
    2: from /usr/local/opt/ruby/bin/irb:23:in `<main>'
    1: from /usr/local/lib/ruby/site_ruby/2.6.0/rubygems.rb:302:in `activate_bin_path'
/usr/local/lib/ruby/site_ruby/2.6.0/rubygems.rb:283:in `find_spec_for_exe': can't find gem irb (>= 0.a) with executable irb (Gem::GemNotFoundException)

我尝试过:

$ brew link ruby
Warning: Refusing to link macOS-provided software: ruby
If you need to have ruby first in your PATH run:
  echo 'export PATH="/usr/local/opt/ruby/bin:$PATH"' >> ~/.bash_profile

For compilers to find ruby you may need to set:
  export LDFLAGS="-L/usr/local/opt/ruby/lib"
  export CPPFLAGS="-I/usr/local/opt/ruby/include"

我的/etc/paths文件顶部下面有几行:

I have the lines below at the top of my /etc/paths file:

/usr/local/bin
/usr/local/opt/ruby/bin
/usr/local/lib/ruby/gems/2.6.0/bin

irb不会显示在gem list的输出中，但是:

irb doesn't show up in the output of gem list, but:

$ find /usr/local -name irb
/usr/local/lib/ruby/2.6.0/irb
/usr/local/Cellar/ruby/2.6.0_1/bin/irb
/usr/local/Cellar/ruby/2.6.0_1/lib/ruby/2.6.0/irb
/usr/local/Cellar/ruby/2.6.0_1/lib/ruby/gems/2.6.0/gems/irb-1.0.0/exe/irb
/usr/local/Cellar/ruby/2.6.0_1/share/ri/2.6.0/system/lib/irb

我在ri& rdoc.

推荐答案

运行:gem install irb，现在您可以开始使用了.

Run: gem install irb and you now good to go.

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