gistfile1.rb

#!/usr/bin/ruby
kmodule = 'ixgbe'
modules = '/proc/modules'
min_version = '3'
exit_code = 0

kmodule_version = %x{ modinfo -F version #{kmodule} } if %x{ grep #{kmodule} #{modules} }.to_str[/#{kmodule}/] 

unless kmodule_version.nil?
  puts "<<<#{kmodule}_version>>>"
  if kmodule_version.split('.')[0] < min_version
    puts "#{kmodule} version is #{kmodule_version.chomp}! (Lowest major version allowed: #{min_version})"
    exit_code = 2
  else 
    puts "#{kmodule} version is #{kmodule_version}"
  end
end

exit(exit_code)