exe/mnogootex in mnogootex-0.2.0 vs exe/mnogootex in mnogootex-0.2.1

@@ -25,10 +25,10 @@
 if ARGV.length == 3
   raise "Unknown command." unless %w{show view open}.include? ARGV[1].downcase
   job = Mnogootex::Job.new cls: ARGV[2], target: File.expand_path(target)
   pdf = Dir.glob("#{job.tmp_dirname}/*.pdf").first
   raise "PDF non esiste." unless File.exist? pdf
-  `open #{pdf}`
+  `command -v open >/dev/null && open #{pdf} || xdg-open #{pdf}`
   exit
 end
 
 puts "Mnogootex v#{Mnogootex::VERSION}"