无法在全新安装的Rails上创建新应用

Question

我正在尝试在全新安装的Rails上创建一个新的应用程序,它给了我一个"许可被拒绝",然后是很多其他的东西,然后才开始工作.

我试图寻找答案,但似乎根本不容易找到答案.这就是我的终端的样子:

    Zach-Beckers-Computer:rails_projects Zach$ rails new first_app
      create  
/Users/Zach/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/1.9.1/fileutils.rb:247:in `mkdir': Permission denied - /rails_projects/first_app (Errno::EACCES)
    from /Users/Zach/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/1.9.1/fileutils.rb:247:in `fu_mkdir'
    from /Users/Zach/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/1.9.1/fileutils.rb:221:in `block (2 levels) in mkdir_p'
    from /Users/Zach/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/1.9.1/fileutils.rb:219:in `reverse_each'
    from /Users/Zach/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/1.9.1/fileutils.rb:219:in `block in mkdir_p'
    from /Users/Zach/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/1.9.1/fileutils.rb:205:in `each'
    from /Users/Zach/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/1.9.1/fileutils.rb:205:in `mkdir_p'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/gems/thor-0.14.6/lib/thor/actions/empty_directory.rb:51:in `block in invoke!'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/gems/thor-0.14.6/lib/thor/actions/empty_directory.rb:114:in `call'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/gems/thor-0.14.6/lib/thor/actions/empty_directory.rb:114:in `invoke_with_conflict_check'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/gems/thor-0.14.6/lib/thor/actions/empty_directory.rb:50:in `invoke!'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/gems/thor-0.14.6/lib/thor/actions.rb:95:in `action'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/gems/thor-0.14.6/lib/thor/actions/empty_directory.rb:15:in `empty_directory'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/gems/railties-3.2.2/lib/rails/generators/app_base.rb:103:in `create_root'
    from (eval):1:in `create_root'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/gems/thor-0.14.6/lib/thor/task.rb:22:in `run'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/gems/thor-0.14.6/lib/thor/invocation.rb:118:in `invoke_task'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/gems/thor-0.14.6/lib/thor/invocation.rb:124:in `block in invoke_all'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/gems/thor-0.14.6/lib/thor/invocation.rb:124:in `each'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/gems/thor-0.14.6/lib/thor/invocation.rb:124:in `map'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/gems/thor-0.14.6/lib/thor/invocation.rb:124:in `invoke_all'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/gems/thor-0.14.6/lib/thor/group.rb:226:in `dispatch'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/gems/thor-0.14.6/lib/thor/base.rb:389:in `start'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/gems/railties-3.2.2/lib/rails/commands/application.rb:38:in `<top (required)>'
    from /Users/Zach/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
    from /Users/Zach/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/gems/railties-3.2.2/lib/rails/cli.rb:15:in `<top (required)>'
    from /Users/Zach/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
    from /Users/Zach/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/gems/railties-3.2.2/bin/rails:7:in `<top (required)>'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/bin/rails:19:in `load'
    from /Users/Zach/.rvm/gems/ruby-1.9.3-p125@rails3tutorial2ndEd/bin/rails:19:in `<main>'

我不知道我需要什么或我需要做什么.我应该提到我在一台1岁的Macbook pro上运行OSX Lion(10.7).

Answer 1

当您应该在"home"目录中时,看起来您正试图在根目录中创建rails应用程序.在OS X中,它是/ Users/Zach.做这个:

cd ~/
mkdir rails_projects
cd rails_projects
rails new first_app