use backticks since we don't want to pollute stdout

main.rb

@@ -47,8 +47,8 @@ def update_mpd()
 	      return true
       end
       puts "telling mpd to refresh"
-      system("mv spool/*.mp3 tracks/")
-      system("mpc update")
+      `mv spool/*.mp3 tracks/`
+      `mpc update`
       new_songs.each do |song|
         s = song.split("/")[1]
         res = system("mpc add #{Shellwords.shellescape(s)}")
@@ -72,8 +72,8 @@ if options.length == 0
 end
 
 puts "creating spool and tracks directories"
-system("mkdir -p spool")
-system("mkdir -p tracks")
+`mkdir -p spool`
+`"mkdir -p tracks`
 
 if File.exists?("/usr/bin/mpd")
   if !File.exists?("/usr/bin/mpc")
@@ -81,49 +81,49 @@ if File.exists?("/usr/bin/mpd")
     exit
   end
   puts "starting mpd if not already running"
-  system("systemctl start mpd") unless `ps aux | grep mpd` != ""
-  system("mpc clear")
-  system("mpc add /")
-  system("mpc shuffle")
-  system("mpc repeat")
+  `systemctl start mpd` unless `ps aux | grep mpd` != ""
+  `mpc clear`
+  `mpc add /`
+  `mpc shuffle`
+  `mpc repeat`
 end
 
 bot = Discordrb::Commands::CommandBot.new token: options[:bot_token], prefix: '!radio '
 
 bot.command :start do |event|
-  system("mpc play")
+  `mpc play`
   event.respond("starting radio")
 end
 
 bot.command :stop do |event|
-  system("mpc stop")
+  `mpc stop`
   event.respond("stoping radio")
 end
 
 bot.command :reload do |event|
   event.respond("reloading queue")
-  system("mpc stop")
-  system("mpc clear")
-  system("mpc update")
-  system("mpc add /")
+  `mpc stop`
+  `mpc clear`
+  `mpc update`
+  `mpc add /`
   event.respond("queue reloaded")
   nil
 end
 
 bot.command :pause do |event|
   event.respond("pausing playback")
-  system("mpc toggle")
+  `mpc toggle`
   nil
 end
 
 bot.command :skip do |event|
   event.respond("skipping")
-  system("mpc next")
+  `mpc next`
   nil
 end
 
 bot.command :shuffle do |event|
-  system("mpc shuffle")
+  `mpc shuffle`
   event.respond("shuffled queue")
   nil
 end