在教程中安裝Rubygems時出現錯誤消息

Question

我正處於Hartl的RoR教程的起步階段（第1.2.2節），並且在安裝Ruby之后無法正確安裝RubyGems。 請參見下面的序列：

Hansell-Shooks-MacBook-Pro:~ hansellshook$ rvm install 1.9.2
Installing Ruby from source to: /Users/hansellshook/.rvm/rubies/ruby-1.9.2-p290, this may take a while depending on your cpu(s)...

ruby-1.9.2-p290 - #fetching 
ruby-1.9.2-p290 - #extracted to /Users/hansellshook/.rvm/src/ruby-1.9.2-p290 (already   extracted)
Fetching yaml-0.1.4.tar.gz to /Users/hansellshook/.rvm/archives
Extracting yaml-0.1.4.tar.gz to /Users/hansellshook/.rvm/src
Configuring yaml in /Users/hansellshook/.rvm/src/yaml-0.1.4.
Compiling yaml in /Users/hansellshook/.rvm/src/yaml-0.1.4.
Installing yaml to /Users/hansellshook/.rvm/usr
ruby-1.9.2-p290 - #configuring 
ruby-1.9.2-p290 - #compiling 
ruby-1.9.2-p290 - #installing 
Removing old Rubygems files...
Installing rubygems-1.8.10 for ruby-1.9.2-p290 ...
Installation of rubygems completed successfully.
ruby-1.9.2-p290 - adjusting #shebangs for (gem irb erb ri rdoc testrb rake).
ruby-1.9.2-p290 - #importing default gemsets (/Users/hansellshook/.rvm/gemsets/)
Install of ruby-1.9.2-p290 - #complete 
Hansell-Shooks-MacBook-Pro:~ hansellshook$ rvm --create 1.8.7-p352@rails2tutorial 
Hansell-Shooks-MacBook-Pro:~ hansellshook$ rvm --create use 1.9.2-p290@rails3tutorial
Using /Users/hansellshook/.rvm/gems/ruby-1.9.2-p290 with gemset rails3tutorial
Hansell-Shooks-MacBook-Pro:~ hansellshook$ rvm --default use 1.9.2-p290@rails3tutorial
Using /Users/hansellshook/.rvm/gems/ruby-1.9.2-p290 with gemset rails3tutorial
Hansell-Shooks-MacBook-Pro:~ hansellshook$ which gem
/Users/hansellshook/.rvm/rubies/ruby-1.9.2-p290/bin/gem
Hansell-Shooks-MacBook-Pro:~ hansellshook$ [sudo] ruby setup.rb
-bash: [sudo]: command not found

閱讀完序列后，在我看來，安裝Ruby 1.9.2時已經進行了安裝。 但是，從這一點上講，我無法繼續進行任何工作（這是安裝Rails）。 有人知道我可能會缺少什么嗎？

Answer 1

不要在sudo周圍輸入括號； 表示sudo是可選的/可能不是必需的/可能不適用於您的系統。 您正在運行Mac，因此可以使用它。