vagrant@vagrant-ubuntu-trusty-64:~$ ruby -v
ruby 1.9.3p484 (2013-11-22 revision 43786) [x86_64-linux]
vagrant@vagrant-ubuntu-trusty-64:~$ gem -v
1.8.23
vagrant@vagrant-ubuntu-trusty-64:~$ gem update –system
ERROR: While executing gem … (RuntimeError)
gem update –system is disabled on Debian, because it will overwrite the content of the rubygems Debian package, and might break your Debian system in subtle ways. The Debian-supported way to update rubygems is through apt-get, using Debian official repositories.
If you really know what you are doing, you can still update rubygems by setting the REALLY_GEM_UPDATE_SYSTEM environment variable, but please remember that this is completely unsupported by Debian.
vagrant@vagrant-ubuntu-trusty-64:~$ gem list
*** LOCAL GEMS ***
curl -L https://toolbelt.treasuredata.com/sh/install-amazon1-td-agent3.sh | sh
[vagrant@localhost td-agent]$ ls
plugin td-agent.conf
