rbenv:rails:安装rails 5.2.1后未立即找到命令

Question

我花了一整天的时间试图从Rails 4x升级到5.2.1。我按照本指南进行升级，但未能成功升级。

问题：在"成功"安装Rails 5之后，使用：ruby 2.5.3p105 (2018-10-18 revision 65156) [x86_64-darwin17]和rails -v我得到了吗

rbenv: rails: command not found
The `rails' command exists in these Ruby versions:
2.2.0

我尝试过的东西：gem pristine different gemsgem pristine --all这在小路上玩耍，但到目前为止运气不佳。

如有任何帮助，将不胜感激

此外，这里是我的宝石环境：

RubyGems Environment:
- RUBYGEMS VERSION: 2.7.6
- RUBY VERSION: 2.5.3 (2018-10-18 patchlevel 105) [x86_64-darwin17]
- INSTALLATION DIRECTORY: /Users/Matt/.rvm/gems/ruby-2.2.0
- USER INSTALLATION DIRECTORY: /Users/Matt/.gem/ruby/2.5.0
- RUBY EXECUTABLE: /Users/Matt/.rbenv/versions/2.5.3/bin/ruby
- EXECUTABLE DIRECTORY: /Users/Matt/.rvm/gems/ruby-2.2.0/bin
- SPEC CACHE DIRECTORY: /Users/Matt/Tools/.rbenv/versions/2.2.0/lib/ruby/gems/specs
- SYSTEM CONFIGURATION DIRECTORY: /Users/Matt/.rbenv/versions/2.5.3/etc
- RUBYGEMS PLATFORMS:
- ruby
- x86_64-darwin-17
- GEM PATHS:
- /Users/Matt/.rvm/gems/ruby-2.2.0
- /Users/Matt/Tools/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0
- GEM CONFIGURATION:
- :update_sources => true
- :verbose => true
- :backtrace => false
- :bulk_threshold => 1000
- "gem" => "--no-document"
- REMOTE SOURCES:
- https://rubygems.org/
- SHELL PATH:
- /Users/Matt/.rbenv/versions/2.5.3/bin
- /usr/local/Cellar/rbenv/1.1.1/libexec
- /Users/Matt/.rbenv/plugins/ruby-build/bin
- /Users/Matt/.rbenv/shims
- /Users/Matt/.rbenv/bin
- /Users/Matt/anaconda/bin
- /Library/Frameworks/Python.framework/Versions/3.5/bin
- /Users/Matt/.rbenv/shims
- /Users/Matt/.rbenv/shims
- /usr/local/bin
- /usr/bin
- /bin
- /usr/sbin
- /sbin
- /opt/X11/bin

Answer 1

您使用rbenv安装了ruby，现在可以安装gem了。而CCD_ 7是用于CCD_。因此，首先要设置Ruby的全局版本，您应该在主目录中创建.ruby-version文件，并在其中写入已安装的Ruby版本(2.5.3(

然后应该运行gem install rails命令来安装rails。