# How to use gems in irb on ubuntu?

**URL:** <https://www.ruby-forum.com/t/how-to-use-gems-in-irb-on-ubuntu/197469>\
**Category:** Ruby\
**Created:** [October 14, 2010, 10:07pm UTC](https://www.ruby-forum.com/t/how-to-use-gems-in-irb-on-ubuntu/197469 "2010-10-14T22:07:08Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![okkezSS](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/o/85f322/32.png) [@okkezSS](https://www.ruby-forum.com/u/okkezSS)\
**Post date:** [October 14, 2010, 10:07pm UTC](https://www.ruby-forum.com/t/how-to-use-gems-in-irb-on-ubuntu/197469/1 "2010-10-14T22:07:08Z")

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I want to use the gem date\_easter in irb, but entering require  
‘date\_easter’ causes irb to complain:

LoadError: no such file to load – date\_easter  
from (irb):3:in `require’  
from (irb):3  
from :0

date\_easter is installed under  
/usr/lib/ruby/gems/1.8/gems/date\_easter-0.0.1 on my machine. How to get  
it?

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**Author:** ![trapper](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/2acd7d/32.png) [@trapper](https://www.ruby-forum.com/u/trapper)\
**Post date:** [October 14, 2010, 10:20pm UTC](https://www.ruby-forum.com/t/how-to-use-gems-in-irb-on-ubuntu/197469/2 "2010-10-14T22:20:37Z")

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On 10/14/2010 3:07 PM, Fritz T. wrote:

> it?  
> You need to require the rubygems module first and the require your gem  
> modules.

-Jeremy

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**Author:** ![trapper](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/2acd7d/32.png) [@trapper](https://www.ruby-forum.com/u/trapper)\
**Post date:** [October 14, 2010, 10:14pm UTC](https://www.ruby-forum.com/t/how-to-use-gems-in-irb-on-ubuntu/197469/3 "2010-10-14T22:14:58Z")

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require ‘rubygems’

---

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**Author:** ![trapper](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/2acd7d/32.png) [@trapper](https://www.ruby-forum.com/u/trapper)\
**Post date:** [October 14, 2010, 10:35pm UTC](https://www.ruby-forum.com/t/how-to-use-gems-in-irb-on-ubuntu/197469/4 "2010-10-14T22:35:26Z")

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Thanks.