# Meaning of "gem version of rails"?

**URL:** <https://www.ruby-forum.com/t/meaning-of-gem-version-of-rails/126172>\
**Category:** Rails\
**Created:** [January 16, 2008, 12:54am UTC](https://www.ruby-forum.com/t/meaning-of-gem-version-of-rails/126172 "2008-01-16T00:54:06Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![robb](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/a183cd/32.png) [@robb](https://www.ruby-forum.com/u/robb)\
**Post date:** [January 16, 2008, 12:54am UTC](https://www.ruby-forum.com/t/meaning-of-gem-version-of-rails/126172/1 "2008-01-16T00:54:06Z")

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This phrase appears in environment.rb. How is this different from  
“version of rails”?

Thanks,  
Robb

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**Author:** ![robb](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/a183cd/32.png) [@robb](https://www.ruby-forum.com/u/robb)\
**Post date:** [January 16, 2008, 12:56am UTC](https://www.ruby-forum.com/t/meaning-of-gem-version-of-rails/126172/2 "2008-01-16T00:56:49Z")

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Rails is a RubyGem so the version of rails and the “gem” version of  
rails are interchangeable terms.