El Capitan Install Issue

[ducky007]

Get the following error when installing on OS X 10.11:

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

Solved it by adding -n /usr/local/bin/xcodeproj to the gem install sync command. Might want to update install directions. Also, there could be a better way to solve this.

[mikemee]

Fwiw, it installed and ran fine on my (relatively fresh) El Cap install.

[designatednerd]

I am experiencing a similar issue, but with a different folder:

Ellens-MacBook-Pro:Scripts ellenshapiro$ sudo gem install synx
ERROR:  While executing gem ... (Errno::EPERM)
    Operation not permitted - /usr/bin/synx

the Colorize and Clamp dependencies were able to install just fine, but synx is barfing even if I try the above suggestion of adding -n /usr/bin/synx to the end of my gem install command. El Cap 10.11.1.

[ducky007]

Look carefully. You have to change the directory to /usr/local/bin/...

[paoloiulita]

this may be related to System Integrity Protection
check this

https://support.apple.com/en-us/HT204899

[ceyhun]

sudo gem install -n /usr/local/bin/ synx seems to make it work on El Capitan