Question

在Ubuntu 18.04上安装了ruby 2.5，我尝试使用ri命令，结果如下：

$ ri String
Nothing known about String

为回答similar questions，建议提供给：

1。使用rvm命令生成文档

$ rvm docs generate

我不是使用rvm安装的，所以我想这个选项对我来说是关闭的。

2。生成已安装宝石的文档

$ gem rdoc --all --ri --no-rdoc

这给出了以下错误消息：

ERROR:  Unable to document did_you_mean-1.2.0, /usr/share/rubygems-integration/all/gems/did_you_mean-1.2.0 is missing, skipping
ERROR:  Unable to document minitest-5.10.3, /usr/share/rubygems-integration/all/gems/minitest-5.10.3 is missing, skipping
ERROR:  Unable to document net-telnet-0.1.1, /usr/share/rubygems-integration/all/gems/net-telnet-0.1.1 is missing, skipping
ERROR:  Unable to document power_assert-0.2.7, /usr/share/rubygems-integration/all/gems/power_assert-0.2.7 is missing, skipping
ERROR:  Unable to document rake-12.3.1, /usr/share/rubygems-integration/all/gems/rake-12.3.1 is missing, skipping
Parsing documentation for rdoc-4.3.0
Parsing documentation for rdoc-data-4.1.0
ERROR:  Unable to document test-unit-3.2.5, /usr/share/rubygems-integration/all/gems/test-unit-3.2.5 is missing, skipping

3。使用rdoc-data --install

$ gem install rdoc-data
$ rdoc-data --install

这返回了错误消息：

NOTE: Gem.datadir is deprecated; use spec.datadir instead. It will be removed on or after 2016-10-01.
Gem.datadir called from /var/lib/gems/2.5.0/gems/rdoc-data-4.1.0/lib/rdoc/data.rb:50.
Your ruby version 2.5 is not supported, only 1.8, 1.9, 2.0, 2.1, 2.2, 2.3

也许这安装了rdoc-data gem的过时版本？如果是这样，有什么办法可以解决这个问题？

4。从来源生成文档

$ tar xvfz ~/Downloads/ruby-2_5_4.tar.gz
$ cd ruby-2_5_4
$ rdoc --all --ri

出现错误：

Traceback (most recent call last):
    1: from /usr/local/bin/rdoc:23:in `<main>'
/usr/local/bin/rdoc:23:in `load': cannot load such file -- /usr/lib/ruby/gems/2.5.0/gems/rdoc-6.0.1/exe/rdoc (LoadError)

确实，exe目录包含文件rdoc2.5而不是普通的rdoc。

所以。从这里去哪里？

Answer 1

通常情况下，完整记录我已经尝试过的内容表明了前进的道路，而第四次尝试的错误消息让我想知道路径中是否有rdoc2.5和rdoc2.5。 / p>

以下对我有用：

$ rdoc2.5 --all --ri
Parsing sources...
100% [831/831]  vsnprintf.c                                                                           

Generating RI format into /home/christians/.rdoc...

  Files:        831

  Classes:     1324 ( 565 undocumented)
  Modules:      284 ( 121 undocumented)
  Constants:   1313 ( 526 undocumented)
  Attributes:  1066 ( 251 undocumented)
  Methods:    10078 (2161 undocumented)

  Total:      14065 (3624 undocumented)
   74.23% documented

  Elapsed: 26.8s

尽管我只能使用ri2.5命令查看文档。常规ri命令返回一个不同的错误，表明我可能使用以下实验解决方法之一破坏了某些东西：

$ ri String
Traceback (most recent call last):
    1: from /usr/local/bin/ri:23:in `<main>'
/usr/local/bin/ri:23:in `load': cannot load such file -- /usr/lib/ruby/gems/2.5.0/gems/rdoc-6.0.1/exe/ri (LoadError)

这使我想知道我的红宝石安装是否应达到应有的清洁程度。 dpkg命令报告以下已安装的ruby软件包：

$ dpkg -l | grep ruby
ii  libruby2.5:amd64                           2.5.1-1ubuntu1.2                             amd64        Libraries necessary to run Ruby 2.5
ii  rake                                       12.3.1-1                                     all          ruby make-like utility
ii  ruby                                       1:2.5.1                                      amd64        Interpreter of object-oriented scripting language Ruby (default version)
ii  ruby-did-you-mean                          1.2.0-2                                      all          smart error messages for Ruby > 2.3
ii  ruby-minitest                              5.10.3-1                                     all          Ruby test tools supporting TDD, BDD, mocking, and benchmarking
ii  ruby-net-telnet                            0.1.1-2                                      all          telnet client library
ii  ruby-power-assert                          0.3.0-1                                      all          library showing values of variables and method calls in an expression
ii  ruby-test-unit                             3.2.5-1                                      all          unit testing framework for Ruby
ii  ruby2.5                                    2.5.1-1ubuntu1.2                             amd64        Interpreter of object-oriented scripting language Ruby
ii  rubygems-integration                       1.11                                         all          integration of Debian Ruby packages with Rubygems

也许最好重新安装所有与红宝石相关的东西？

更新：我删除了所有与ruby相关的内容，并手动删除了在/ usr / local / bin（ri和rdoc）中徘徊的几个命令。我使用apt install ruby重新安装，一切似乎都很好。这些文档将在安装后生成并可用。

为ruby 2.5生成文档

1 个答案: