Gems LoadError in Linux

ruby-talk
1

Hello,

I'm new to Ruby and I wanna run a test a simple Gem in the latest
Ubuntu. I've downloaded Ruby 1.9.1 and RubyGems, and the Gem I wanna
test is NFC - which appears installed as a Local Gem after I did $ sudo
gem install nfc..

The problem happens when I try to run my test code:

require 'nfc'

loop do
  NFC.instance.find do |tag|
    p tag
  end
end

Which errors with:
`require': no such file to load -- nfc (LoadError)

After reading about Gems for a while, I found out that I also need to
add
require 'rubygems' to the beginning of the code, but that also gives me
an error:

`require': no such file to load -- rubygems (LoadError)

What am I doing wrong? :confused: Any help will be great.

···

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2

Hello,

I'm new to Ruby and I wanna run a test a simple Gem in the latest
Ubuntu. I've downloaded Ruby 1.9.1 and RubyGems, and the Gem I wanna
test is NFC - which appears installed as a Local Gem after I did $ sudo
gem install nfc..

What OS are you running on? Also, can you provide the output of:

  ruby -v
  gem -v

Also the output of 'gem list nfc' might be helpful.

The problem happens when I try to run my test code:

require 'nfc'

loop do
  NFC.instance.find do |tag|
    p tag
  end
end

Which errors with:
`require': no such file to load -- nfc (LoadError)

After reading about Gems for a while, I found out that I also need to
add
require 'rubygems' to the beginning of the code, but that also gives me
an error:

`require': no such file to load -- rubygems (LoadError)

What am I doing wrong? :confused: Any help will be great.

Not sure. This is strange. You *should* be requiring rubygems at the
top of your program. But you *shouldn't* be getting that error. :slight_smile:

Hopefully the info you provide us with the output of the above commands
will help us track this down!

···

On Thu, Dec 24, 2009 at 01:20:07AM +0900, Augusto Esteves wrote:

--
Aaron Patterson
http://tenderlovemaking.com/

3

`require': no such file to load -- rubygems (LoadError)

What am I doing wrong? :confused: Any help will be great.

Did you install rubygems into the same ruby that you are using to run
that file?

you could do a
$ gem which nfc

to see if the file is there, too.

You could also try installing the rubygem *without* sudo so that it is
installed to a different location that gems might like more [?]
-r

···

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4

Roger Pack wrote:

Did you install rubygems into the same ruby that you are using to run
that file?

How do I know that? I did:

1. $ sudo apt-get install ruby1.9.1-full
2. $ sudo apt-get install rubygems1.9.1

you could do a
$ gem which nfc

to see if the file is there, too.

that instruction resulted in:

(checking gem nfc-2.0.1 for nfc)
/var/lib/gems/1.9.1/gems/nfc-2.0.1/lib/nfc.rb

···

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5

Got it working. I was using Ubuntu and I had version 1.8 installed
already. I was installing the gems in ruby1.8 and using ruby1.9

···

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6

Hi, i know that the post is old, but i'm having the same problem, i am running Ubuntu 10.04 and installed

ruby1.9.1-full
rubygems1.9.1

when requiring active record for example:

require 'rubygems'
require 'active_record'

and run the file i get error:
`require': no such file to load -- active_record (LoadError)

I dont have any other versions of ruby, just 1.9.1, any ideas?

Thanks in advanced

Jaime

···

On Wednesday, December 23, 2009 11:20 AM Augusto Esteves wrote:

Hello,

I am new to Ruby and I wanna run a test a simple Gem in the latest
Ubuntu. I have downloaded Ruby 1.9.1 and RubyGems, and the Gem I wanna
test is NFC - which appears installed as a Local Gem after I did $ sudo
gem install nfc..

The problem happens when I try to run my test code:

require 'nfc'

loop do
NFC.instance.find do |tag|
p tag
end
end

Which errors with:
`require': no such file to load -- nfc (LoadError)

After reading about Gems for a while, I found out that I also need to
add
require 'rubygems' to the beginning of the code, but that also gives me
an error:

`require': no such file to load -- rubygems (LoadError)

What am I doing wrong? :confused: Any help will be great.
--
Posted via http://www.ruby-forum.com/\.

On Wednesday, December 23, 2009 12:03 PM Aaron Patterson wrote:

What OS are you running on? Also, can you provide the output of:

ruby -v
gem -v

Also the output of 'gem list nfc' might be helpful.

Not sure. This is strange. You *should* be requiring rubygems at the
top of your program. But you *should not* be getting that error. :slight_smile:

Hopefully the info you provide us with the output of the above commands
will help us track this down!

--
Aaron Patterson
http://tenderlovemaking.com/

On Wednesday, December 23, 2009 1:35 PM Roger Pack wrote:

Did you install rubygems into the same ruby that you are using to run
that file?

you could do a
$ gem which nfc

to see if the file is there, too.

You could also try installing the rubygem *without* sudo so that it is
installed to a different location that gems might like more [?]
-r
--
Posted via http://www.ruby-forum.com/\.

On Wednesday, December 23, 2009 9:56 PM Augusto Esteves wrote:

Roger Pack wrote:

How do I know that? I did:

1. $ sudo apt-get install ruby1.9.1-full
2. $ sudo apt-get install rubygems1.9.1

that instruction resulted in:

(checking gem nfc-2.0.1 for nfc)
/var/lib/gems/1.9.1/gems/nfc-2.0.1/lib/nfc.rb

--
Posted via http://www.ruby-forum.com/\.

On Thursday, December 24, 2009 7:29 AM Augusto Esteves wrote:

Got it working. I was using Ubuntu and I had version 1.8 installed
already. I was installing the gems in ruby1.8 and using ruby1.9
--
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Submitted via EggHeadCafe - Software Developer Portal of Choice
Changing WCF Service Implementation at Runtime
http://www.eggheadcafe.com/tutorials/aspnet/d9263dcc-f7ed-42f3-bc96-321461be3306/changing-wcf-service-implementation-at-runtime.aspx

7

Jaime Gonzalez wrote:

Hi, i know that the post is old, but i'm having the same problem, i am
running Ubuntu 10.04 and installed

ruby1.9.1-full
rubygems1.9.1

when requiring active record for example:

require 'rubygems'
require 'active_record'

Recommend trying 1.9.2 or trying it in irb like
$ ruby --disable-gems -S irb

···

require 'rubygems'
require 'active_record'

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8

perhaps, if you try with export GEM_HOME="path_gems" ?

···

2010/8/20 Jaime Gonzalez <gonzalezgjaime@gmail.com>

Hi, i know that the post is old, but i'm having the same problem, i am
running Ubuntu 10.04 and installed

ruby1.9.1-full
rubygems1.9.1

when requiring active record for example:

require 'rubygems'
require 'active_record'

and run the file i get error:
`require': no such file to load -- active_record (LoadError)

I dont have any other versions of ruby, just 1.9.1, any ideas?

Thanks in advanced

Jaime

> On Wednesday, December 23, 2009 11:20 AM Augusto Esteves wrote:

> Hello,
>
> I am new to Ruby and I wanna run a test a simple Gem in the latest
> Ubuntu. I have downloaded Ruby 1.9.1 and RubyGems, and the Gem I wanna
> test is NFC - which appears installed as a Local Gem after I did $ sudo
> gem install nfc..
>
> The problem happens when I try to run my test code:
>
> require 'nfc'
>
> loop do
> NFC.instance.find do |tag|
> p tag
> end
> end
>
> Which errors with:
> `require': no such file to load -- nfc (LoadError)
>
> After reading about Gems for a while, I found out that I also need to
> add
> require 'rubygems' to the beginning of the code, but that also gives me
> an error:
>
> `require': no such file to load -- rubygems (LoadError)
>
> What am I doing wrong? :confused: Any help will be great.
> --
> Posted via http://www.ruby-forum.com/\.

>> On Wednesday, December 23, 2009 12:03 PM Aaron Patterson wrote:

>> What OS are you running on? Also, can you provide the output of:
>>
>> ruby -v
>> gem -v
>>
>> Also the output of 'gem list nfc' might be helpful.
>>
>>
>> Not sure. This is strange. You *should* be requiring rubygems at the
>> top of your program. But you *should not* be getting that error. :slight_smile:
>>
>> Hopefully the info you provide us with the output of the above commands
>> will help us track this down!
>>
>> --
>> Aaron Patterson
>> http://tenderlovemaking.com/

>>> On Wednesday, December 23, 2009 1:35 PM Roger Pack wrote:

>>> Did you install rubygems into the same ruby that you are using to run
>>> that file?
>>>
>>> you could do a
>>> $ gem which nfc
>>>
>>> to see if the file is there, too.
>>>
>>> You could also try installing the rubygem *without* sudo so that it is
>>> installed to a different location that gems might like more [?]
>>> -r
>>> --
>>> Posted via http://www.ruby-forum.com/\.

>>>> On Wednesday, December 23, 2009 9:56 PM Augusto Esteves wrote:

>>>> Roger Pack wrote:
>>>>
>>>> How do I know that? I did:
>>>>
>>>> 1. $ sudo apt-get install ruby1.9.1-full
>>>> 2. $ sudo apt-get install rubygems1.9.1
>>>>
>>>>
>>>> that instruction resulted in:
>>>>
>>>> (checking gem nfc-2.0.1 for nfc)
>>>> /var/lib/gems/1.9.1/gems/nfc-2.0.1/lib/nfc.rb
>>>>
>>>>
>>>>
>>>> --
>>>> Posted via http://www.ruby-forum.com/\.

>>>>> On Thursday, December 24, 2009 7:29 AM Augusto Esteves wrote:

>>>>> Got it working. I was using Ubuntu and I had version 1.8 installed
>>>>> already. I was installing the gems in ruby1.8 and using ruby1.9
>>>>> --
>>>>> Posted via http://www.ruby-forum.com/\.

>>>>> Submitted via EggHeadCafe - Software Developer Portal of Choice
>>>>> Changing WCF Service Implementation at Runtime
>>>>>
http://www.eggheadcafe.com/tutorials/aspnet/d9263dcc-f7ed-42f3-bc96-321461be3306/changing-wcf-service-implementation-at-runtime.aspx

--
Ernie Rojas Villoslado.
Bach. Ing. de Sistemas - Universidad Nacional de Trujillo
Cel. 943648134
RPM: #283166
Best Regards!!

9

Roger Pack wrote:

Jaime Gonzalez wrote:

Hi, i know that the post is old, but i'm having the same problem, i am
running Ubuntu 10.04 and installed

ruby1.9.1-full
rubygems1.9.1

when requiring active record for example:

require 'rubygems'
require 'active_record'

Recommend trying 1.9.2 or trying it in irb like
$ ruby --disable-gems -S irb

require 'rubygems'
require 'active_record'

Here's what happens on my Ubuntu 10.04 box. I may be standing on my air
hose
by attempting to have both 1.8.? installed alongside 1.9.1. I would
like to
whack both and go to 1.9.2 but I'm afraid of making things worse instead
of
better.

[~/sinatra_etudes]$ ruby1.9.1 sinatra1.rb
sinatra1.rb:2:in `require': no such file to load -- sinatra (LoadError)
  from sinatra1.rb:2:in `<main>'
[~/sinatra_etudes]$ gem1.9.1 which sinatra
/usr/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra.rb
[~/sinatra_etudes]$ uname -a
Linux lucid1 2.6.32-24-generic #42-Ubuntu SMP Fri Aug 20 14:24:04 UTC
2010 i686 GNU/Linux
[~/sinatra_etudes]$ ruby1.9.1 -v
ruby 1.9.1p378 (2010-01-10 revision 26273) [i486-linux]
[~/sinatra_etudes]$ gem1.9.1 -v
1.3.7
[~/sinatra_etudes]$ ruby1.9.1 --disable-gems -S irb
irb(main):001:0> require 'rubygems'
=> true
irb(main):002:0> require 'sinatra'
=> true
irb(main):004:0> exit
[~/sinatra_etudes]$ export GEM_HOME="path_gems"
[~/sinatra_etudes]$ ruby1.9.1 sinatra1.rb
sinatra1.rb:2:in `require': no such file to load -- sinatra (LoadError)
  from sinatra1.rb:2:in `<main>'
[~/sinatra_etudes]$ export GEM_HOME="/usr/lib/ruby/gems/1.9.1/gems"
[~/sinatra_etudes]$ ruby1.9.1 sinatra1.rb
sinatra1.rb:2:in `require': no such file to load -- sinatra (LoadError)
  from sinatra1.rb:2:in `<main>'

So it works in irb but not from the command line.

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