1Devel::Autoflush(3)   User Contributed Perl Documentation  Devel::Autoflush(3)
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NAME

6       Devel::Autoflush - Set autoflush from the command line
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VERSION

9       version 0.06
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SYNOPSIS

12        perl -MDevel::Autoflush Makefile.PL
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DESCRIPTION

15       This module is a hack to set autoflush for STDOUT and STDERR from the
16       command line or from "PERL5OPT" for code that needs it but doesn't have
17       it.
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19       This often happens when prompting:
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21         # guess.pl
22         print "Guess a number: ";
23         my $n = <STDIN>;
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25       As long as the output is going to a terminal, the prompt is flushed
26       when STDIN is read.  However, if the output is being piped, the print
27       statement will not automatically be flushed, no prompt will be seen and
28       the program will silently appear to hang while waiting for input.  This
29       might happen with 'tee':
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31         $ perl guess.pl | tee capture.out
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33       Use Devel::Autoflush to work around this:
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35         $ perl -MDevel::Autoflush guess.pl | tee capture.out
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37       Or set it in "PERL5OPT":
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39         $ export PERL5OPT=-MDevel::Autoflush
40         $ perl guess.pl | tee capture.out
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42       = SEE ALSO
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44       ยท   CPANPLUS::Internals::Utils::Autoflush -- same idea but STDOUT only
45           and
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47           only available as part of the full CPANPLUS distribution
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SUPPORT

50   Bugs / Feature Requests
51       Please report any bugs or feature requests through the issue tracker at
52       <https://github.com/dagolden/Devel-Autoflush/issues>.  You will be
53       notified automatically of any progress on your issue.
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55   Source Code
56       This is open source software.  The code repository is available for
57       public review and contribution under the terms of the license.
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59       <https://github.com/dagolden/Devel-Autoflush>
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61         git clone https://github.com/dagolden/Devel-Autoflush.git
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AUTHOR

64       David Golden <dagolden@cpan.org>
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67       This software is Copyright (c) 2014 by David Golden.
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69       This is free software, licensed under:
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71         The Apache License, Version 2.0, January 2004
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75perl v5.30.0                      2019-07-26               Devel::Autoflush(3)
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