非常奇怪的問題，試圖讓軌道在OS X上工作10.8

Question

我遇到了一個非常奇怪的問題，試圖讓軌道在我的系統上工作。每次我嘗試在安裝後運行rails時都說需要安裝。如果有人可以指引我走正確的道路，或給我一些關於如何進一步排除故障的提示，將不勝感激。

非常感謝您

$軌 的Rails目前尚不在此係統上安裝。要獲得最新版本，只需輸入：

$ sudo gem install rails 

然後，您可以重新運行「rails」命令。

$ sudo gem install rails 
Fetching: rails-4.0.2.gem (100%) 
Successfully installed rails-4.0.2 
Parsing documentation for rails-4.0.2 
Installing ri documentation for rails-4.0.2 
Done installing documentation for rails after 436 seconds 
1 gem installed 

$ which rails 
/usr/local/bin/rails 


$ gem list 

*** LOCAL GEMS *** 

actionmailer (4.0.2) 
actionpack (4.0.2) 
activemodel (4.0.2) 
activerecord (4.0.2) 
activerecord-deprecated_finders (1.0.3) 
activesupport (4.0.2) 
arel (4.0.1) 
atomic (1.1.14) 
bigdecimal (1.2.3) 
builder (3.1.4) 
bundler (1.5.2) 
erubis (2.7.0) 
hike (1.2.3) 
i18n (0.6.9) 
io-console (0.4.2) 
json (1.8.1) 
mail (2.5.4) 
mime-types (1.25.1) 
minitest (4.7.5) 
multi_json (1.8.4) 
polyglot (0.3.3) 
psych (2.0.2) 
rack (1.5.2) 
rack-test (0.6.2) 
**rails (4.0.2)** 
railties (4.0.2) 
rake (10.1.0) 
rdoc (4.1.0) 
sprockets (2.10.1) 
sprockets-rails (2.0.1) 
test-unit (2.1.0.0) 
thor (0.18.1) 
thread_safe (0.1.3) 
tilt (1.4.1) 
treetop (1.4.15) 
tzinfo (0.3.38) 

$ rails -v 
Rails is not currently installed on this system. To get the latest version, simply type: 

    $ sudo gem install rails 

You can then rerun your "rails" command. 

Answer 1

Rails的是在這裏：

$ which rails 
/usr/local/bin/rails 

但調用軌不起作用：

$ rails -v 
Rails is not currently installed on this system. 

這意味着慶典沒有在你的PATH可變的路徑。

添加它（假設你是在Mac）發行

$ echo 'export PATH='/usr/local/bin:$PATH'" >> ~/.bash_profile 

然後用

$ source ~/.bash_profile 

重裝，看看它是否承認rails命令即可。