軌控制檯命令是給一個錯誤

Question

我新的軌道，當我試圖運行從我的根這是給下面的錯誤軌道控制檯...

harsha@Trebuchet:~/simp_cms$ rails console 
/home/harsha/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/app_rails_loader.rb:39: warning: Insecure world writable dir /usr in PATH, mode 040777 
/home/harsha/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.10.5/lib/bundler/shared_helpers.rb:78: warning: Insecure world writable dir /usr in PATH, mode 040777 
/home/harsha/.rbenv/versions/2.2.2/lib/ruby/2.2.0/irb/completion.rb:9:in `require': cannot load such file -- readline (LoadError) 
    from /home/harsha/.rbenv/versions/2.2.2/lib/ruby/2.2.0/irb/completion.rb:9:in `<top (required)>' 
    from /home/harsha/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/commands/console.rb:3:in `require' 
    from /home/harsha/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/commands/console.rb:3:in `<top (required)>' 
    from /home/harsha/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:123:in `require' 
    from /home/harsha/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:123:in `require_command!' 
    from /home/harsha/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:58:in `console' 
    from /home/harsha/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:39:in `run_command!' 
    from /home/harsha/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/commands.rb:17:in `<top (required)>' 
    from bin/rails:4:in `require' 
    from bin/rails:4:in `<main>' 

我的紅寶石& ROR版本細節下面提到

harsha@Trebuchet:~/simp_cms$ ruby -v 
ruby 2.2.2p95 (2015-04-13 revision 50295) [x86_64-linux] 
harsha@Trebuchet:~/simp_cms$ rails --version 
/home/harsha/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/app_rails_loader.rb:39: warning: Insecure world writable dir /usr in PATH, mode 040777 
/home/harsha/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.10.5/lib/bundler/shared_helpers.rb:78: warning: Insecure world writable dir /usr in PATH, mode 040777 
Rails 4.2.2 
harsha@Trebuchet:~/simp_cms$ gem list 

*** LOCAL GEMS *** 

actionmailer (4.2.2) 
actionpack (4.2.2) 
actionview (4.2.2) 
activejob (4.2.2) 
activemodel (4.2.2) 
activerecord (4.2.2) 
activesupport (4.2.2) 
arel (6.0.0) 
bigdecimal (1.2.7, 1.2.6) 
binding_of_caller (0.7.2) 
builder (3.2.2) 
bundler (1.10.5) 
columnize (0.9.0) 
debug_inspector (0.0.2) 
debugger-linecache (1.2.0) 
debugger-ruby_core_source (1.3.8) 
erubis (2.7.0) 
globalid (0.3.5) 
i18n (0.7.0) 
io-console (0.4.3) 
json (1.8.3, 1.8.1) 
loofah (2.0.2) 
mail (2.6.3) 
mime-types (2.6.1) 
mini_portile (0.6.2) 
minitest (5.7.0, 5.4.3) 
mysql2 (0.3.18) 
nokogiri (1.6.6.2) 
power_assert (0.2.3, 0.2.2) 
psych (2.0.13, 2.0.8) 
rack (1.6.4) 
rack-test (0.6.3) 
rails (4.2.2) 
rails-deprecated_sanitizer (1.0.3) 
rails-dom-testing (1.0.6) 
rails-html-sanitizer (1.0.2) 
railties (4.2.2) 
rake (10.4.2) 
rdoc (4.2.0) 
sdoc (0.4.1) 
spring (1.3.6) 
sprockets (3.2.0) 
sprockets-rails (2.3.2) 
test-unit (3.1.2, 3.0.8) 
thor (0.19.1) 
thread_safe (0.3.5) 
tzinfo (1.2.2) 
web-console (2.1.3) 
harsha@Trebuchet:~/simp_cms$ 

請問我該怎麼做才能擺脫這個錯誤？

Answer 1

您正在運行的Ruby版本沒有Readline支持 請gem install rb-readline或重新編譯ruby --with-readline。 因此，安裝後使用gem install rb-readline並確認安裝成功：

將gem 'rb-readline'添加到您的Gemfile中，它應該可以工作。