# Rack gem in not getting unpacked

**URL:** <https://www.ruby-forum.com/t/rack-gem-in-not-getting-unpacked/194385>\
**Category:** Rails\
**Created:** [September 3, 2010, 2:46pm UTC](https://www.ruby-forum.com/t/rack-gem-in-not-getting-unpacked/194385 "2010-09-03T14:46:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![saurabhpurnaye](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/ee59a6/32.png) [@saurabhpurnaye](https://www.ruby-forum.com/u/saurabhpurnaye)\
**Post date:** [September 3, 2010, 2:46pm UTC](https://www.ruby-forum.com/t/rack-gem-in-not-getting-unpacked/194385/1 "2010-09-03T14:46:39Z")

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Hi All,

my server is having rack gems as:

rack (1.2.1, 1.1.0, 1.0.1, 1.0.0)

when i run the following command in my project/vendor/gems folder:

gem unpack rack-1.0.0

It shows the following error message:

Error: Gem ‘rack-1.0.0’ not installed.

Any idea on this??

Thanks,

Saurabh

---

<div class="post-metadata">

**Author:** ![saurabhpurnaye](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/ee59a6/32.png) [@saurabhpurnaye](https://www.ruby-forum.com/u/saurabhpurnaye)\
**Post date:** [September 3, 2010, 3:10pm UTC](https://www.ruby-forum.com/t/rack-gem-in-not-getting-unpacked/194385/2 "2010-09-03T15:10:40Z")

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Saurabh P. wrote:

> Hi All,
> 
> my server is having rack gems as:
> 
> rack (1.2.1, 1.1.0, 1.0.1, 1.0.0)
> 
> when i run the following command in my project/vendor/gems folder:
> 
> gem unpack rack-1.0.0
> 
> It shows the following error message:
> 
> Error: Gem ‘rack-1.0.0’ not installed.
> 
> Any idea on this??
> 
> Thanks,
> 
> Saurabh

Query solved, used following command:

gem unpack rack -v=1.0.0