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RubyGems: undefined method ‘manage_gems’ for Gem:Module (NoMethodError)

After updating RubyGems I got the following error message:

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/usr/bin/gem:10: undefined method `manage_gems' for Gem:Module (NoMethodError)
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Nice. So I took a look at the output that was generated and came across this:

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Deprecation Notices:

* Gem::manage_gems has been removed.
* Time::today will be removed in RubyGems 1.4.

Now what? Right – fix it.

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sudo vim /usr/bin/gem

Search “Gem.manage_gems” and remove it or replace it with

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#Gem.manage_gems

Unfortunately i got this

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/usr/bin/gem:23: uninitialized constant Gem::GemRunner (NameError)
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when running the gems command. After “googling” I came up with this:  

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sudo vim /usr/bin/gem

inserting

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require 'rubygems/gem_runner'

so that the first lines of /usr/bin/gem look like this 

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require 'rubygems'
require 'rubygems/gem_runner'
#Gem.manage_gems

Fixed.

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This entry was posted on Thursday, April 30th, 2009 at 06:59 and is filed under Development. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

40 Responses to “RubyGems: undefined method ‘manage_gems’ for Gem:Module (NoMethodError)”

  1. Laurent Farcy says:
    06/05/2009 at 18:27

    Thx. It solved my problem.

  2. Juan Carlos says:
    08/05/2009 at 13:57

    Thanks!! It works for me too!

  3. pililo says:
    11/05/2009 at 05:15

    Thanks

    =)

  4. Rexar says:
    13/05/2009 at 20:47

    Thanks a lot man !

  5. David says:
    18/05/2009 at 15:11

    Thanks 2!!!

  6. feby says:
    18/05/2009 at 19:05

    You’re my hero :-)

  7. Doug says:
    29/05/2009 at 17:11

    Thanks a ton.

  8. Jessie says:
    02/06/2009 at 10:19

    Great !
    Problem solved on Ubuntu / ruby 1.86
    Thanks !

  9. Pablo says:
    04/06/2009 at 06:04

    Just what I was looking for!! Thank you very much.

  10. psynaptic says:
    08/06/2009 at 03:08

    Nice one, fixed my issue and allowed me to install a specific version of rails. Thank you!

  11. Mark says:
    11/06/2009 at 00:47

    Worked here too. Dumb bugs! hahah

  12. Bill says:
    17/06/2009 at 01:51

    That did the trick on Xubuntu 8.04. Thanks for the gem.

  13. akimo says:
    17/06/2009 at 12:11

    thank you for this fix. that saved my day!

  14. Wouter says:
    18/06/2009 at 23:06

    Tnx!

  15. Raviraj says:
    25/06/2009 at 12:38

    Thank a lots

  16. Aashish says:
    07/07/2009 at 09:55

    Thanks a bunch!

  17. Vellingiri says:
    09/07/2009 at 06:23

    I really thanks for your effort on this. I also faced this problem. I went through your modification wherever is needed. It works fine for me. Thanks man.

  18. angel says:
    09/07/2009 at 16:31

    Thanks a lot!

    Respect!

  19. Terry says:
    17/07/2009 at 21:53

    Thanks! It worked for me too. Good on ya for sharing.

  20. Ignacio says:
    21/07/2009 at 09:26

    Thanks man! You rock

  21. Noboru says:
    27/07/2009 at 09:40

    Thank’s that helped

  22. Adam DiCarlo says:
    28/07/2009 at 09:42

    Hmm, couldn’t you just replace /usr/bin/gem with /usr/bin/gem1.8? That’s what got installed by update_rubygems.

    To fix it I just did:
    sudo mv /usr/bin/gem1.8 /usr/bin/gem

  23. lfat says:
    07/08/2009 at 13:37

    thanks so much!!!

  24. Shane says:
    07/08/2009 at 14:10

    Thanks for the info!

  25. Ansuman says:
    13/08/2009 at 11:52

    very logical..: )

  26. sergej says:
    18/08/2009 at 16:09

    Thx!

  27. Sim says:
    21/08/2009 at 00:43

    Thanks a bunch!!

  28. phil says:
    21/08/2009 at 20:17

    thx saved my day!

  29. parth says:
    31/08/2009 at 04:33

    Thanks a lot for posting the solution to this issue!

  30. Edi says:
    21/09/2009 at 15:31

    Thanks!

  31. chemaff says:
    20/10/2009 at 11:52

    Thanks!! :-)

  32. Charles says:
    23/10/2009 at 20:06

    Yay, thanks.

  33. umpirsky says:
    28/10/2009 at 09:44

    Man, this is awesome. i saw this post previously, but blog theme is vired and I didn’t saw explanation text at all :)

  34. Mr Anderson says:
    03/11/2009 at 00:59

    Thanks, that’s what I was looking for. ;)

  35. Raul says:
    06/11/2009 at 16:17

    Thanks ,very good to do

  36. Miguel says:
    16/11/2009 at 03:20

    Thanks! it worked for me and I’m a total noob…

  37. Java says:
    20/11/2009 at 03:00

    Didn’t. Ruby sucks.

  38. Jaroslav says:
    28/11/2009 at 08:37

    Thanks! Muchas gracias!

  39. Bless says:
    08/12/2009 at 07:36

    Thanks. But how do you know this is the one that need to be written?

  40. Greg says:
    25/12/2009 at 01:29

    Very nice.

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