sub runscript {
system("x.pl");
# or if it takes some time to run the script
system("x.pl &"); # runs in the background
}
...
-command => [\&runscript]
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Another option, used more often, is to run the script thru IPC and use Tk's fileevent to watch it.
#!/usr/bin/perl
use warnings;
use strict;
use IPC::Open3;
use Tk;
$|=1;
my $pid=open3(\*IN,\*OUT,0,'/bin/bash');
my $mw=new MainWindow;
$mw->geometry("600x400");
my $t=$mw->Scrolled('Text',-width => 80,
-height => 80,
)->pack;
&refresh;
$mw->fileevent(\*OUT,'readable',\&write_t);
#keep filling the text widget
my $id = Tk::After->new($mw,2000,'repeat',\&refresh);
MainLoop;
sub refresh{
print IN "top b n 1";
print IN "\n"; #absolutely needed and on separate line
}
sub write_t {
my $str= <OUT>;
$t->insert("1.0",$str);
# $t->see("0.0");
}
__END__
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