1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
#!/usr/local/bin/new/perl -w
use strict;
my $FILE_LOG = (@ARGV) ? shift : 'README';
use Tk;
my $top = MainWindow->new;
my $t = $top->Scrolled('Text')->pack(-expand => 1, -fill => 'both');
my $b = $top->Button(-text => 'Quit', -command => [destroy => $top])->pack;
init_check();
MainLoop;
sub init_check
{
# my $cmd = "/usr/bin/tail +0f $FILE_LOG";
my $cmd = "ls -l ";
my $open_pid = open (TAIL, "$cmd|") || die "Can't open $cmd: $!";
select (TAIL); $| = 1;
select (STDOUT); $| = 1;
$top->fileevent(\*TAIL, 'readable',
sub {
my $line = <TAIL>;
if (defined $line)
{
$t->insert('end',$line);
$top->idletasks;
}
else
{
close(TAIL);
}
});
}
|
