Hello great monsk!
I asked this question already and received a pretty cool
example from <zentara>. Below it is:
#!/usr/bin/perl
use strict;
use Tk;
use IO::Handle;

my $H=IO::Handle->new;
open($H,"tail -f -n 50 z.txt |") or die $!;

my $main = MainWindow->new;
my $t=$main->Text(-wrap=>'none')->pack(-expand=>1);
$main->fileevent(\*$H,'readable',[\&fill,$t]);

MainLoop;

sub fill {
  my ($w)=@_;
  my $text;
my $text =<$H>;
$w->insert('end',$text);
$w->yview('end');
}

[download]
This works great. The only problem is that when I close the
widget, the prompt isn't returned. Does anyone know
how to overcome this?
Thanks a lot in advance!

In reply to Adding the output of tailf -f filename to Tk widget (scrolled) by sashac88

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