I'm trying to use the open() pipe feature to make use of the progress bar feature of zenity and I can't seem to get it to work. I tried a shell script I found online and that worked so I know that zenity works (not surprisingly). Here is my code: 

open(my $Progress, '|-', 'zenity --title "Explore" --progress --percen
+tage 0 ' .
                         '--text "Just a dumb test" --auto-close --aut
+o-kill') or
                                      die "**Fatal err, open pipe writ
+e failed";
#open(my $Progress, '|-', 'cat -n - >zippy.txt') or
#                                      die "**Fatal err, open pipe wri
+te failed";
sleep 2;

foreach my $Percent ( qw{10 20 30 40 50 60 70 80 90 100} ) {
  print "DBG> ", $Percent, "\n";
#  print $Progress sprintf("%3d\n", $Percent);
  print $Progress "$Percent\n";
  sleep 2;
  print $Progress "# Retry $Percent\n";
  }

close($Progress);

[download]

Notice the commented out code that I tried "cat" and it worked as expected. I also tried a different way to send the percent value and it failed as well.

When it runs, the zenity panel comes up with 0 percent with a "cancel" button and a grayed out "OK" button. The Perl program completes and the zenity panel disappears. I don't know what I'm doing wrong.

Can anyone help?

Thanks,
  EigenFunctions
  OpSys: Ubuntu 18.04; Perl: Perl 5, version 26, subversion 1 (v5.26.1) built for x86_64-linux-gnu-thread-multi (with 67 registered patches)   OpSys: Win7 x64 Service Pack 1 Professional/Home Premium; Perl: Strawberry (v5.22.0)/ActiveState (v5.14.2)

In reply to Linux Perl with zenity progress bar by EigenFunctions

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