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Top Forums UNIX for Dummies Questions & Answers Top level TCSH while Loop doen't work Post 61468 by sprynmr on Thursday 3rd of February 2005 06:42:22 PM
Old 02-03-2005
Network Top level TCSH while Loop doen't work

Hey guys...

I'm learning some shell scripting on OS X using the tcsh shell.

For some reason... my while loop isn't executing right (or more likely I am doing something wrong.)

Something as simple as this doesn't work:

Code:
#!/bin/tcsh

set g = 0

while ($g <10)

echo "this" $g

@ g = $g + 1

end

By doesn't work, I mean it goes through the first time and then stops.

If I type it in to the terminal it works fine. But if I write it in a text editor (BBEdit) and save it as a script, then execute (after making it executable) it only goes through the first iteration.

The WEIRDEST part is that if I nest a while loop inside of it with the exact same syntax, the inner loop works correctly, while the outer loop still only goes through once.

Little help?

Robert
 

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POE::Loop::Tk(3pm)					User Contributed Perl Documentation					POE::Loop::Tk(3pm)

sub skip_tests {
  return "Tk needs a DISPLAY (set one today, okay?)" unless (
    (defined $ENV{DISPLAY} and length $ENV{DISPLAY}) or $^O eq "MSWin32"
  );
  my $test_name = shift;
  if ($test_name eq "k_signals_rerun" and $^O eq "MSWin32") {
    return "This test crashes Perl when run with Tk on $^O";
  }
  return "Tk tests require the Tk module" if do { eval "use Tk"; $@ };
  my $m = eval { Tk::MainWindow->new() };
  if ($@) {
    my $why = $@;
    $why =~ s/ at .*//;
    return "Tk couldn't be initialized: $why";
  }
  return; }

NAME
POE::Loop::Tk - a bridge that allows POE to be driven by Tk SYNOPSIS
See POE::Loop. DESCRIPTION
POE::Loop::Tk implements the interface documented in POE::Loop. Therefore it has no documentation of its own. Please see POE::Loop for more details. POE::Loop::Tk is one of two versions of the Tk event loop bridge. The other, POE::Loop::TkActiveState accommodates behavior differences in ActiveState's build of Tk. Both versions share common code in POE::Loop::TkCommon. POE::Loop::Tk dynamically selects the appropriate bridge code based on the runtime environment. SEE ALSO
POE, POE::Loop, Tk, POE::Loop::TkCommon, POE::Loop::PerlSignals. AUTHORS &; LICENSING Please see POE for more information about authors, contributors, and POE's licensing. perl v5.10.1 2010-04-11 POE::Loop::Tk(3pm)
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