#!/usr/bin/perl

my $foo = '';
open FH, '+>', \$foo or die $!;


format FH_TOP =
                   WHO COMMAND OUTPUT
USER        TERMINAL     DATE & TIME              LOCATION
-----------------------------------------------------------
.

my @who_output= `who`;

foreach my $line (@who_output) {
my ($userid,$terminal,$month,$day,$time,$location) = split(/\s+/,$line);
chomp $location;

format FH =
@<<<<<<<    @<<<<<<<<<  @<<< @<<  @<<<<<        @<<<<<<<<<<<<
$userid  $terminal  $month  $day   $time  $location
.
write FH;
}

#print "$foo\n";

use Tk;
my $top = new MainWindow;
my $txt = $top->Scrolled("Text")->pack;

 $txt->insert('end', "$foo\n") ;

MainLoop;