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Actually the problem is that i want to remove rails from Os x.

Roman Kiselenko
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Ali Ahmed
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    Possible duplicate of [Uninstall Rails completely](http://stackoverflow.com/questions/16164697/uninstall-rails-completely) – Aleksey Nov 05 '16 at 11:46

2 Answers2

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Usually, you install Rails with

gem install rails

To uninstall a Rails (or any other gem) use:

gem uninstall rails

To uninstall all gems at once using:

gem uninstall -aIx
spickermann
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  • Alis-MacBook-Pro:~ aliahmad$ gem uninstall rails -v 4.2.5 ERROR: While executing gem ... (Gem::FilePermissionError) You don't have write permissions for the /Library/Ruby/Gems/2.0.0 directory. Alis-MacBook-Pro:~ aliahmad$ – Ali Ahmed Nov 05 '16 at 08:24
  • When you used `sudo` to install Rails then you will need `sudo` to remove it. – spickermann Nov 05 '16 at 08:29
  • sir i have successfully removed rails -v 4.2.5 but when i type Rails -v it still appearing Rails 4.2.5 what to do? – Ali Ahmed Nov 05 '16 at 08:33
  • Since you want to remove all gems anyway you might want to use the command from my updated answer. – spickermann Nov 05 '16 at 08:35
  • sir i have successfully removed all rails configuration from my max OSX using sudo – Ali Ahmed Nov 05 '16 at 08:41
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To completely uninstall rails use,

sudo gem uninstall rails
sudo gem uninstall railties

You can also specify version of rails using,

sudo gem uninstall rails -v 4.0.0
sudo gem uninstall railties -v 4.0.0
Ammar Shah
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