csv.rb

array = Dir.glob('configuration_*')
array.each do |f|
       file = File.open(f ,"r")
      lines = file.readlines
     
  lines.each do |line|

  if line.include? 'uid'
     uid = line.match(/(?=uid)(.*)/)
     puts ""
     puts "==>#{uid} "
     #res_licence = { uid: uid}
  end 

 if line.include? 'url'
     url = line.match(/(?=url)(.*)/)
     puts "==>#{url} "
    #res_licence = {  url: url}
  end 


 if line.include? 'dbname'
     dbname = line.match(/(?=dbname)(.*)/)
     puts "=>#{dbname} "
res_licence = {uid: uid, url: url, dbname: dbname}
  end 

   end
 end

output.txt

res_licence.each do |k,v|
    puts "#{k}, #{v}"
end

the output  of hash 
uid, 
url, url'] = 'https://adf.sandboxbk.net';
dbname, dbname'            => 'ta',