# Installed gems

**URL:** <https://www.ruby-forum.com/t/installed-gems/172911>\
**Category:** Rails\
**Created:** [July 29, 2009, 10:29pm UTC](https://www.ruby-forum.com/t/installed-gems/172911 "2009-07-29T22:29:51Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jmail137](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e95f7d/32.png) [@jmail137](https://www.ruby-forum.com/u/jmail137)\
**Post date:** [July 29, 2009, 10:29pm UTC](https://www.ruby-forum.com/t/installed-gems/172911/1 "2009-07-29T22:29:51Z")

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where do installed Gems reside in the instant Rails folder tree?  
I noticed that so far each time I have run into an error such as:  
“Gem::LoadError: Could not find RubyGem mocha (\>= 0)”

I am required to go to the Ruby command line and type “Gem install  
mocha”  
then Gem update.

Any insight on how this works would be appreciated.

thanks, Joel

---

<div class="post-metadata">

**Author:** ![jmail137](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e95f7d/32.png) [@jmail137](https://www.ruby-forum.com/u/jmail137)\
**Post date:** [July 29, 2009, 11:20pm UTC](https://www.ruby-forum.com/t/installed-gems/172911/2 "2009-07-29T23:20:46Z")

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Joel Ma wrote:

> where do installed Gems reside in the instant Rails folder tree?  
> I noticed that so far each time I have run into an error such as:  
> “Gem::LoadError: Could not find RubyGem mocha (\>= 0)”
> 
> I am required to go to the Ruby command line and type “Gem install  
> mocha”  
> then Gem update.
> 
> Any insight on how this works would be appreciated.
> 
> thanks, Joel

Ok so i ran “gem env”  
output \>\>\>

- GEM PATHS:
  - C:/InstantRails/ruby/lib/ruby/gems/1.8
  - C:/Users/joel/.gem/ruby/1.8

- GEM CONFIGURATION:
  - :update\_sources =\> true
  - :verbose =\> true
  - :benchmark =\> false
  - :backtrace =\> false
  - :bulk\_threshold =\> 1000

So does this mean that gems are found here:  
C:/InstantRails/ruby/lib/ruby/gems/1.8 ?