问题
This happens whenever I ran 'gem' or 'brew':
/Library/Ruby/Site/2.0.0/rubygems/stub_specification.rb:75:in `initialize': Permission denied - /Library/Ruby/Gems/2.0.0/specifications/cocoapods-plugins-0.4.2.gemspec (Errno::EACCES)
from /Library/Ruby/Site/2.0.0/rubygems/stub_specification.rb:75:in `open'
from /Library/Ruby/Site/2.0.0/rubygems/stub_specification.rb:75:in `data'
from /Library/Ruby/Site/2.0.0/rubygems/stub_specification.rb:178:in `valid?'
from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:731:in `block in each_stub'
from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:723:in `block (2 levels) in each_gemspec'
from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:722:in `each'
from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:722:in `block in each_gemspec'
from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:721:in `each'
from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:721:in `each_gemspec'
from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:729:in `each_stub'
from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:748:in `stubs'
from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:705:in `_all'
from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:894:in `each'
from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:1010:in `reverse_each'
from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:1010:in `latest_specs'
from /Library/Ruby/Site/2.0.0/rubygems.rb:470:in `find_latest_files'
from /Library/Ruby/Site/2.0.0/rubygems.rb:983:in `load_plugins'
from /Library/Ruby/Site/2.0.0/rubygems/gem_runner.rb:81:in `<top (required)>'
from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /usr/bin/gem:9:in `<main>'
I did install cocoapods as well, and when I checked the folder(/Library/Ruby/Gems/2.0.0/specifications/):
-rw------- 1 root wheel 1599 Apr 9 22:41 cocoapods-plugins-0.4.2.gemspec
-rwxr-xr-x 1 root wheel 1376 Jun 27 2014 cocoapods-trunk-0.1.3.gemspec
-rwxr-xr-x 1 root wheel 1376 Sep 4 2014 cocoapods-trunk-0.1.4.gemspec
-rw------- 1 root wheel 1290 Apr 9 22:41 cocoapods-trunk-0.6.0.gemspec
-rwxr-xr-x 1 root wheel 980 Apr 27 2014 cocoapods-try-0.2.0.gemspec
-rwxr-xr-x 1 root wheel 980 Jun 27 2014 cocoapods-try-0.3.0.gemspec
-rw------- 1 root wheel 980 Apr 9 22:41 cocoapods-try-0.4.3.gemspec
It seems like I dont have the -r read permission for that and they all ran fine when I use 'sudo', anyone know what I did wrong? either the way I installed gem or ruby, sorry I am a complete n00b to Ruby and Gems. My gem command lives in '/usr/bin/gem' and my brew command lives in 'usr/local/bin/brew' Many thanks!
回答1:
It seems like you install it from root account and trying to run from user that dont have permissions for it.
来源：https://stackoverflow.com/questions/29555478/brew-and-gem-both-throws-permission-denied-error-whenever-i-run-it