ERROR: While executing gem ... (Errno::EPERM) Operation not permitted

ruby macos rubygems osx-elcapitan compass
Roy Calderon picture Roy Calderon · Oct 1, 2015 · Viewed 93.9k times · Source

I just updated my Mac to OSX 10.11 El Capitan and some gems didn't remain.

The problem arose when I tried to run installations of different gems... e.g.:

> sudo gem install compass

Once I execute, I get the error:

> ERROR:  While executing gem ... (Errno::EPERM) Operation not permitted

This happens with other gems, as well...

I've run Homebrew and tried to install Ruby again, but nothing is working.

Answer

Roy Calderon picture Roy Calderon · Oct 1, 2015

I found the answer on SASS issues: https://github.com/sass/sass/issues/1768

Since OSX el Capitan there is a new security function that prevents you from modifying system files called Rootless. So you have 2 options:

  • If you install gems on /usr/local/bin there will be no problem because rootless doesn't affect this path.

  • sudo gem install -n /usr/local/bin GEM_NAME_HERE

Related questions

How to install a gem or update RubyGems if it fails with a permissions error

I'm trying to install a gem using gem install mygem or update RubyGems using gem update --system, and it fails with this error: ERROR: While executing gem ... (Gem::FilePermissionError) You don't have write permissions for the /Library/Ruby/Gems/2.0.0 directory. …

Read More
'sudo gem install' or 'gem install' and gem locations

Running 'sudo gem list --local' and 'gem list --local' give me differing results. My gem path is set to my home folder and only contains the gems from 'gem list --local'. It's probably not good to have gems installed in …

Read More
Can't install gems on OS X "El Capitan"

I am not able to install and run fakes3 gem on El Capitan Beta 5. I tried: sudo gem install fakes3 ERROR: While executing gem ... (Errno::EPERM) Operation not permitted - /usr/bin/fakes3 Then I tried doing it the cocoapods …

Read More