ruby 调用Linux 系统变量,比如
#!/usr/bin/env ruby
user = ENV[‘$USER‘]
hostname = ENV[‘$HOSTNAME‘]
if user != ‘root‘
puts "${user} is not root"
end本文出自 “专注Linux 运维” 博客，请务必保留此出处http://purplegrape.blog.51cto.com/1330104/1891555
原文：http://purplegrape.blog.51cto.com/1330104/1891555