# Error When Trying To Install a Gem **URL:** \ **Category:** Ruby\ **Created:** [September 2, 2009, 6:49pm UTC](https://www.ruby-forum.com/t/error-when-trying-to-install-a-gem/174821 "2009-09-02T18:49:21Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![nathanc](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/e68b1a/32.png) [@nathanc](https://www.ruby-forum.com/u/nathanc)\ **Post date:** [September 2, 2009, 6:49pm UTC](https://www.ruby-forum.com/t/error-when-trying-to-install-a-gem/174821/1 "2009-09-02T18:49:21Z")
Hello, I’m trying to install the zlib and the simpleton gems in my Linux Ubuntu, but recently i’ve changed my Ubuntu version, then i installed rubygems version 0.9.4-4, but when i try to install this gems i’m getting this error: # ===================================== ubuntu@eeepc:~$ sudo gem install zlib /usr/bin/gem:10: undefined method `manage\_gems’ for Gem:Module (NoMethodError) ubuntu@eeepc:~$ What is wrong? Thanks, Nathan Paulino Campos ---
**Author:** ![nathanc](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/e68b1a/32.png) [@nathanc](https://www.ruby-forum.com/u/nathanc)\ **Post date:** [September 2, 2009, 10:28pm UTC](https://www.ruby-forum.com/t/error-when-trying-to-install-a-gem/174821/2 "2009-09-02T22:28:46Z")
On Sep 2, 6:49 pm, Nathan C. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > # ubuntu@eeepc:~$ > > What is wrong? - There is no gem “zlib” - Ubuntu had patched and modified RubyGems to install gems using their layout, you have two options: A) Update Ubuntu RubyGems package B) Uninstall it and manually install RubyGems on top. Ask the uncle google about this, there are several users with similar issues and their own solutions. - manage\_gem has been deprecated several versions ago, the issue you see means somehow you “gem” script has become stalled or other issues due some upgrade. HTH, ---
**Author:** ![nathanc](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/e68b1a/32.png) [@nathanc](https://www.ruby-forum.com/u/nathanc)\ **Post date:** [September 2, 2009, 10:34pm UTC](https://www.ruby-forum.com/t/error-when-trying-to-install-a-gem/174821/3 "2009-09-02T22:34:02Z")
-------- Original-Nachricht -------- > Datum: Thu, 3 Sep 2009 01:49:29 +0900 > Von: Nathan C. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > An: removed\_email\_address@domain.invalid > Betreff: Error When Trying To Install a Gem > # ubuntu@eeepc:~$ > > What is wrong? Dear Nathan, there is no zlib gem: # gem install zlib ERROR: could not find gem zlib locally or in a repository Do you mean the (external) zlib library ? You can install it in Ubuntu like so: sudo aptitude install zlib1g sudo aptitude install zlib1g-dev (see here: [http://forum.webbynode.com/topic.php?id=56](http://forum.webbynode.com/topic.php?id=56) ) Best regards, Axel ---
**Author:** ![nathanc](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/e68b1a/32.png) [@nathanc](https://www.ruby-forum.com/u/nathanc)\ **Post date:** [September 3, 2009, 2:06am UTC](https://www.ruby-forum.com/t/error-when-trying-to-install-a-gem/174821/4 "2009-09-03T02:06:01Z")
Axel E. wrote: > -------- Original-Nachricht -------- > > > Datum: Thu, 3 Sep 2009 01:49:29 +0900 > > Von: Nathan C. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > > An: removed\_email\_address@domain.invalid > > Betreff: Error When Trying To Install a Gem > > > # ubuntu@eeepc:~$ > > > > What is wrong? > > Dear Nathan, > > there is no zlib gem: > > # gem install zlib > > ERROR: could not find gem zlib locally or in a repository > > Do you mean the (external) zlib library ? > You can install it in Ubuntu like so: > > sudo aptitude install zlib1g > sudo aptitude install zlib1g-dev > > (see here: [http://forum.webbynode.com/topic.php?id=56](http://forum.webbynode.com/topic.php?id=56) ) > > Best regards, > > Axel Hello Axel, Thanks, now i’ve installed the runygems and the zlib1g, but how i can install simpleton, because i’m trying to use the rubyzip gem, but it one of the requirements. Thanks, Nathan Paulino Campos ---
**Author:** ![nathanc](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/e68b1a/32.png) [@nathanc](https://www.ruby-forum.com/u/nathanc)\ **Post date:** [September 3, 2009, 1:40pm UTC](https://www.ruby-forum.com/t/error-when-trying-to-install-a-gem/174821/5 "2009-09-03T13:40:53Z")
-------- Original-Nachricht -------- > Datum: Thu, 3 Sep 2009 09:06:03 +0900 > Von: Nathan C. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > An: removed\_email\_address@domain.invalid > Betreff: Re: Error When Trying To Install a Gem > > > What is wrong? > > > You can install it in Ubuntu like so: > > > Hello Axel, > > > Thanks, now i’ve installed the runygems and the zlib1g, but how i can > > > install simpleton, because i’m trying to use the rubyzip gem, but it one > > > of the requirements. > > ## Thanks, Nathan Paulino Campos > > Posted via [http://www.ruby-forum.com/](http://www.ruby-forum.com/). You can install rubyzip right away, gem install will offer to install any dependencies, if they are not yet installed. Best regards, Axel