I did understand your code not fully. -- It would be far better for me (to understand your answer), had you applied only necessary changes to my code structure -- not changing everything by the way. I would not ask you to explain many things because, it could be hard, so, i did apply what is seems me relevant, and can say, that it is works, but worse -- insted of sometimes, i had to press a key twice-thrice, now the number went up to seven! -- If i but write to pipe the PERLs' way instead of Shell's. Here is the code.

my $FIFO=undef;

mkfifo( $svitok_truby, 0700 ) || die 'Ошиб&#10
+82;а создания &
+#1090;рубы  '.$svitok_truby.'  : '.$!;
local $SIG{CHLD} = "IGNORE";

if( $nomer_vosproizvodyshchego_protsessu=fork ){

  $|=1;
  open( $FIFO, '>', $svitok_truby ) || die 'Не о&#10
+90;крыть труб&#
+1091; '.$svitok_truby.' на запи&#
+1089;ь : '.$!;

  <sniped>

  print $FIFO 'pause';

  <sniped>

}else{

  exec '/usr/bin/mplayer -slave -input file='.$svitok_truby.' /tmp/1.f
+lac';

}

close( $FIFO );
unlink $svitok_truby;
[download]

Just one question, is there a flush command -- to execute after each writing to pipe?

I did test more and have noticed weird connection between input in parent and pausing of mplayer, though to pipe was sent nothing at all -- parent just does its own work, w/o sending a thing to pipe, for example:

mkfifo( $svitok_truby, 0700 ) || die 'Ошиб&#10
+82;а создания &
+#1090;рубы  '.$svitok_truby.'  : '.$!;

# Управляющ&#107
+2;я часть ("род
+итель").
if( $nomer_vosproizvodyshchego_protsessu=fork ){

  $|=1;

  use Term::ReadKey;
  ReadMode 'cbreak';

  # Parent
  while( 1 ){

    $knopka=&ReadKey( 0 );

    if( $knopka eq '/' ){
      system( '/bin/date' );

    }elsif( $knopka eq $knopka_vyhodu ){
      system( '/bin/echo quit >'.$svitok_truby );
      last;
    }
  }

}else{
  ## Child
  for( $i=0; $i<=$#svitok_na_vosproizvedenie; $i++ ){
    system( '/usr/bin/mplayer -slave -input file='.$svitok_truby.' '.$
+svitok_na_vosproizvedenie_kom[$i] );
  }
}

ReadMode 'normal';
unlink $svitok_truby;
[download]

So, when i press key / -- parent just outputs date. But many times pressing, once, «mplayer2» will pause playing -- though nothing was sent to pipe! -- And that input-pipe relation i can not understand. Module «Term» does not have influence -- i had the same w/ the «read» function.

Oh! The site terribly corrupts my input!

Thanks for your answers.

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