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Top Forums UNIX for Advanced & Expert Users Not able to Display the Catched Signal Post 302692349 by Corona688 on Monday 27th of August 2012 01:01:19 PM
Old 08-27-2012
Quote:
Originally Posted by DGPickett
It is wise to log debug stuff to stderr, which by default is completely unbuffered. Just change 'printf(' to 'fprintf( stderr,'.
It's also wise because it keeps your error messages separate from your data. If you're writing a PNG image to standard output, for instance, you don't want "Warning: Needed to flatten image" stuck randomly in the middle of that, you want that going where a human will read it or just nowhere. Writing to stderr lets you control it independently.
 

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Appender::Screen(3pm)					User Contributed Perl Documentation				     Appender::Screen(3pm)

NAME
Log::Log4perl::Appender::Screen - Log to STDOUT/STDERR SYNOPSIS
use Log::Log4perl::Appender::Screen; my $app = Log::Log4perl::Appender::Screen->new( stderr => 0, utf8 => 1, ); $file->log(message => "Log me "); DESCRIPTION
This is a simple appender for writing to STDOUT or STDERR. The constructor "new()" take an optional parameter "stderr", if set to a true value, the appender will log to STDERR. The default setting for "stderr" is 1, so messages will be logged to STDERR by default. If "stderr" is set to a false value, it will log to STDOUT (or, more accurately, whichever file handle is selected via "select()", STDOUT by default). Design and implementation of this module has been greatly inspired by Dave Rolsky's "Log::Dispatch" appender framework. To enable printing wide utf8 characters, set the utf8 option to a true value: my $app = Log::Log4perl::Appender::Screen->new( stderr => 1, utf8 => 1, ); This will issue the necessary binmode command to the selected output channel (stderr/stdout). COPYRIGHT AND LICENSE
Copyright 2002-2009 by Mike Schilli <m@perlmeister.com> and Kevin Goess <cpan@goess.org>. This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.10.1 2010-07-21 Appender::Screen(3pm)
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