Ruby gem install FilePermissionError

Hi community !

Since yesterday, I can’t install gem (Windows and Linux). I have the
following error :

ERROR: While executing gem … (Gem::FilePermissionError)
You don’t have write permissions into the /var/lib/gems/1.9.1

Do you have any solution for resolve my problem ? I’ve test this
command, but no result :

sudo gem update --system

My ruby version : ruby 1.9.3p484 (2013-11-22 revision 43786)
My gem version : 1.8.23

Thank you :slight_smile: