Hunk #1: Fix "ps: unknown option -- f" by using pgrep(1) instead
Hunk #2: restart test MPD before exiting, see RT#126902
Index: t/40-cmds-kill.t
--- t/40-cmds-kill.t.orig
+++ t/40-cmds-kill.t
@@ -22,8 +22,7 @@ use warnings;
         POE::Kernel->delay_set( kill => 0.5 );  # FIXME: use connected event to start tests in pococm-test
     }
     event check => sub {
-        my @procs = grep { /\smpd\s/ } grep { !/grep/ } qx{ ps -ef };
-        is( scalar @procs, 0, 'kill shuts down mpd' );
+        isnt( system( "pgrep mpd" ), 0 );
     };
     event kill => sub {
         POE::Kernel->delay_set( check => 1 );
@@ -47,4 +46,5 @@ plan tests => 1;
 POE::Component::Client::MPD->spawn;
 My::Session->new;
 POE::Kernel->run;
+start_test_mpd();
 exit;