Something is wrong with my ruby

Question

Always the same error:

AilixdeMacBook-Pro:~ Ailix$ ruby -v
ruby 2.0.0p481 (2014-05-08 revision 45883) [universal.x86_64-darwin14]
AilixdeMacBook-Pro:~ Ailix$ ruby -d
Exception `LoadError' at /Library/Ruby/Site/2.0.0/rubygems.rb:1240 - cannot load such file -- rubygems/defaults/operating_system
Exception `LoadError' at /Library/Ruby/Site/2.0.0/rubygems.rb:1249 - cannot load such file -- rubygems/defaults/ruby
Exception `NameError' at /Library/Ruby/Site/2.0.0/rubygems.rb:1257 - uninitialized constant Gem::Specification
/Library/Ruby/Site/2.0.0/rubygems.rb:1257:in `': uninitialized constant Gem::Specification (NameError)
    from :1:in `require'
    from :1:in `'
AilixdeMacBook-Pro:~ Ailix$ gem -v
/Library/Ruby/Site/2.0.0/rubygems.rb:1257:in `': uninitialized constant Gem::Specification (NameError)
    from :1:in `require'
    from :1:in `'
AilixdeMacBook-Pro:~ Ailix$ brew -v
/Library/Ruby/Site/2.0.0/rubygems.rb:1257:in `': uninitialized constant Gem::Specification (NameError)
    from :1:in `require'
    from :1:in `'
AilixdeMacBook-Pro:~ Ailix$ pod repo
/Library/Ruby/Site/2.0.0/rubygems.rb:1257:in `': uninitialized constant Gem::Specification (NameError)
    from :1:in `require'
    from :1:in `'

I think something is wrong with my ruby. But I do not know how to fix it.

My environment:

MacOS 10.10.5
Xcode 7.2

Thank you in advance

Answer 1

The ruby ​​system setup seems to be confusing. Try deleting the offensive /Library/Ruby/Site/2.0.0/rubygems.rb(and there may be more subfolders)

Ruby has its own rubigems /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0, so it should work with them.

, rubygems sudo gem update --system, , , rvm (rvm.io), brew.