在ubuntu下安裝ruby需要注意的事情

  這裡說的是通過apt-get安裝ruby，自己編譯的情況就免了。

首先，在安裝ruby本身時一定要把ruby和ruby-dev全安裝了。現在的版本是1.8，因此應該執行如下命令 Java代碼

1. sudo apt-get install ruby1.8 ruby1.8-dev rubygems  

sudo apt-get install ruby1.8 ruby1.8-dev rubygems 

這是因為許多plugin或者gems都要依賴dev下面的東東，比如ferret就要用到一個叫mkmf的東西，後者就是包含在dev中的。

然後可以gem或者apt-get來安裝rails，不過推薦前者，因為版本肯定是最新的。比如我用的源裡面的rails還不是1.2的呢，用apt-get就不好了。

最後就是找找這些東東都安裝在哪兒了，可以在根目錄下運行find命令 Java代碼

1. sudo find -iname *ruby* >> result.txt  

sudo find -iname *ruby* >> result.txt 

下面是我電腦上的運行結果 Java代碼

1. ./usr/share/doc/ruby  
2. ./usr/share/doc/ruby/ruby-policy.sgml.gz  
3. ./usr/share/doc/ruby/ruby-policy.txt.gz  
4. ./usr/share/doc/ruby/ruby-policy.html  
5. ./usr/share/doc/ruby/ruby-policy.html/ch-ruby.html  
6. ./usr/share/doc/ruby/ruby-policy.html/ap-ruby1.8_bundled_modules.html  
7. ./usr/share/doc/rubygems  
8. ./usr/share/doc/libreadline-ruby1.8  
9. ./usr/share/doc/ruby1.8-dev  
10. ./usr/share/doc/libruby1.8  
11. ./usr/share/doc/ruby1.8  
12. ./usr/share/doc/libopenssl-ruby1.8  
13. ./usr/share/doc/libgems-ruby1.8  
14. ./usr/share/doc/libgems-ruby1.8/test/data/legacy/keyedlist-0.4.0.ruby  
15. ./usr/share/gedit-2/plugins/snippets/ruby.xml  
16. ./usr/share/gtksourceview-1.0/language-specs/ruby.lang  
17. ./usr/share/man/man1/ruby1.8.1.gz  
18. ./usr/share/man/man1/ruby.1.gz  
19. ./usr/share/mime/application/x-ruby.xml  
20. ./usr/share/nano/ruby.nanorc  
21. ./usr/bin/update_rubygems  
22. ./usr/bin/ruby  
23. ./usr/bin/ruby1.8  
24. ./usr/lib/libruby1.8-static.a  
25. ./usr/lib/ruby  
26. ./usr/lib/ruby/gems/1.8/doc/rubygems-0.9.4  
27. ./usr/lib/ruby/gems/1.8/doc/rubygems-0.9.4/ri/Gem/Specification/to_ruby-i.yaml  
28. ./usr/lib/ruby/gems/1.8/doc/rubygems-0.9.4/ri/Gem/Commands/UpdateCommand/do_rubygems_update-i.yaml  
29. ./usr/lib/ruby/gems/1.8/doc/rubygems-0.9.4/ri/Gem/ruby-c.yaml  
30. ./usr/lib/ruby/gems/1.8/doc/rubygems-0.9.4/rdoc/files/lib/rubygems_rb.html  
31. ./usr/lib/ruby/gems/1.8/doc/rubygems-0.9.4/rdoc/files/lib/rubygems  
32. ./usr/lib/ruby/gems/1.8/doc/rubygems-0.9.4/rdoc/files/lib/rubygems/rubygems_version_rb.html  
33. ./usr/lib/ruby/gems/1.8/doc/actionwebservice-1.2.3/ri/ActionWebService/Protocol/Soap/SoapMarshaler/ruby_to_soap-i.yaml  
34. ./usr/lib/ruby/gems/1.8/doc/actionwebservice-1.2.3/ri/ActionWebService/Protocol/Soap/SoapMarshaler/soap_to_ruby-i.yaml  
35. ./usr/lib/ruby/gems/1.8/gems/rake-0.7.3/lib/rake/ruby182_test_unit_fix.rb  
36. ./usr/lib/ruby/gems/1.8/gems/rake-0.7.3/lib/rake/contrib/rubyforgepublisher.rb  
37. ./usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/ruby_version_check.rb  
38. ./usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/rubyprof_ext.rb  
39. ./usr/lib/ruby/1.8/rubygems  
40. ./usr/lib/ruby/1.8/rubygems/rubygems_version.rb  
41. ./usr/lib/ruby/1.8/rubygems.rb  
42. ./usr/lib/ruby/1.8/yaml/rubytypes.rb  
43. ./usr/lib/ruby/1.8/soap/mapping/rubytypeFactory.rb  
44. ./usr/lib/ruby/1.8/wsdl/xmlSchema/xsd2ruby.rb  
45. ./usr/lib/ruby/1.8/wsdl/soap/wsdl2ruby.rb  
46. ./usr/lib/ruby/1.8/irb/ruby-token.rb  
47. ./usr/lib/ruby/1.8/irb/ruby-lex.rb  
48. ./usr/lib/ruby/1.8/i486-linux/rubyio.h  
49. ./usr/lib/ruby/1.8/i486-linux/rubysig.h  
50. ./usr/lib/ruby/1.8/i486-linux/ruby.h  
51. ./usr/lib/ruby/1.8/rubyunit.rb  
52. ./usr/lib/libruby1.8.so.1.8.5  
53. ./usr/lib/libruby1.8.so  
54. ./usr/lib/libruby1.8.so.1.8  
55. ./usr/local/lib/site_ruby  
56. ./usr/local/lib/site_ruby/1.8/rubygems  
57. ./usr/local/lib/site_ruby/1.8/rubygems/rubygems_version.rb  
58. ./usr/local/lib/site_ruby/1.8/rubygems.rb