ruby - How can I install Jekyll on OSX 10.11?

Question

ERROR:  While executing gem ... (Errno::EPERM)
Operation not permitted - /usr/bin/jekyll

I'm getting a permission error on trying to install Jekyll. I'm currently running OSX 10.11 (El Capitan). I also have Xcode 7 and have installed the developer tools. Is there a workaround or is this an OS specific issue?

Answer 1

This is a side effect of Apple's new rootless (aka System Integrity Protection or SIP) feature in OS X El Capitan, but it does not affect /usr/local/bin.

You might try the following:

sudo gem install -n /usr/local/bin/ jekyll

This tells gem to install Jekyll into a folder that isn't protected by SIP, rather than the default protected location under /Library/Ruby/Gems.

This is the solution suggested by Jekyll's developers.