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perl "system" cmd return values..

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Old 11-24-2005
perl "system" cmd return values..
perl 5.6.1:

when i try a "system" command(with if loops for $?), i get this:

child exited with value 1


what is meant by this $? values and what does it meant if it returns 1?..
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LEARN ABOUT DEBIAN

ipc::run3::profreporter

IPC::Run3::ProfReporter(3pm)				User Contributed Perl Documentation			      IPC::Run3::ProfReporter(3pm)

NAME

       IPC::Run3::ProfReporter - base class for handling profiling data

SYNOPSIS

DESCRIPTION

       See IPC::Run3::ProfPP and for an example subclass.

       This class just notes and accumulates times; subclasses use methods like "handle_app_call", "handle_run_exit" and "handle_app_exit" to emit
       reports on it.  The default methods for these handlers are noops.

       If run from the command line, a reporter will be created and run on each logfile given as a command line parameter or on run3.out if none
       are given.

       This allows reports to be run like:

	   perl -MIPC::Run3::ProfPP -e1
	   perl -MIPC::Run3::ProfPP -e1 foo.out bar.out

       Use "-" to read from STDIN (the log file format is meant to be moderately greppable):

	   grep "^cvs " run3.out perl -MIPC::Run3::ProfPP -e1 -

       Use --app to show only application level statistics (ie don't emit a report section for each command run).

METHODS

       "IPC::Run3::ProfReporter->new"
	   Returns a new profile reporting object.

       "$reporter->handle_app_call( ... )"
       "$reporter->handle_app_exit( ... )"
       "$reporter->handle_run_exit( ... )"
	   These methods are called by the handled events (see below).

       "$reporter->app_call(@cmd, $time)"
       "$reporter->app_exit($time)"
       "$reporter->run_exit(@times)"
	      $self->app_call( $time );
	      my $time = $self->get_app_call_time;

	   Sets the time (in floating point seconds) when the application, run3(), or system() was called or exited.  If no time parameter is
	   passed, uses IPC::Run3's time routine.

	   Use get_...() to retrieve these values (and _accum values, too).  This is a separate method to speed the execution time of the setters
	   just a bit.

       "$reporter->get_run_count()"
       "$reporter->get_app_call_time()"
       "$reporter->get_app_exit_time()"
       "$reporter->get_app_cmd()"
       "$reporter->get_app_time()"
       "$reporter->get_app_cumulative_time()"
       "$reporter->get_run_call_time()"
       "$reporter->get_run_exit_time()"
       "$reporter->get_run_time()"
       "$reporter->get_run_cumulative_time()"
       "$reporter->get_sys_call_time()"
       "$reporter->get_sys_exit_time()"
       "$reporter->get_sys_time()"
       "$reporter->get_sys_cumulative_time()"
       "$reporter->get_run_cmd()"

LIMITATIONS

COPYRIGHT

	   Copyright 2003, R. Barrie Slaymaker, Jr., All Rights Reserved

LICENSE

       You may use this module under the terms of the BSD, Artistic, or GPL licenses, any version.

AUTHOR

       Barrie Slaymaker <barries@slaysys.com>

perl v5.14.2							    2011-12-23					      IPC::Run3::ProfReporter(3pm)