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perl redirect output to file ..not working

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Top Forums Shell Programming and Scripting perl redirect output to file ..not working
# 8  
Old 10-17-2008
Quote:
Originally Posted by zedex
unbuffer the output ... with " $| =1 " but even that is not working for infinite while loop if put counter and run loop only 10 times it works.
so rather than using a Net::Ping i am using ping command redirect the o/p to file and search from "time out" which is working fine... any ways thanx for help
Code:
       $|      If set to nonzero, forces a flush right away and after every
               write or print on the currently selected output channel.
               Default is 0 (regardless of whether the channel is really
               buffered by the system or not; $| tells you only whether you've
               asked Perl explicitly to flush after each write).  STDOUT will
               typically be line buffered if output is to the terminal and
               block buffered otherwise.  Setting this variable is useful pri-
               marily when you are outputting to a pipe or socket, such as
               when you are running a Perl program under rsh and want to see
               the output as it's happening.  This has no effect on input
               buffering.  See "getc" in perlfunc for that.  (Mnemonic: when
               you want your pipes to be piping hot.)

MrC
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LEARN ABOUT DEBIAN

sa-check_spamd

SA-CHECK_SPAMD.RAW(1)					User Contributed Perl Documentation				     SA-CHECK_SPAMD.RAW(1)

NAME

       sa-check_spamd - spamd monitoring script for use with Nagios, etc.

SYNOPSIS

       sa-check_spamd [options]

       Options:

	-c secs, --critical=secs	  Critical ping response threshold
	-h, -?, --help			  Print usage message
	-H hostname, --hostname=hostname  Hostname of spamd service to ping
	-p port, --port=port		  Port of spamd service to ping
	--socketpath=path		  Connect to given UNIX domain socket
	-t secs, --timeout=secs 	  Max time to wait for a ping response
	-v, --verbose			  Verbose debug output
	-V, --version			  Output version info
	-w secs, --warning=secs 	  Warning ping response threshold

DESCRIPTION

       The purpose of this program is to provide a tool to monitor the status of "spamd" server processes.  spamd is the daemonized version of the
       spamassassin executable, both provided in the SpamAssassin distribution.

       This program is designed for use, as a plugin, with the Nagios service monitoring software available from http://nagios.org.  It might be
       compatible with other service monitoring packages.  It is also useful as a command line utility or as a component of a custom shell script.

OPTIONS

       Options of the long form can be shortened as long as the remain unambiguous (i.e. --host can be used instead of --hostname).

       -c secs, --critical=secs
	   Critical ping response threshold in seconds.  If a spamd ping response takes longer than the value specified (in seconds) the program
	   will exit with a value of 2 to indicate the critical status.

	   This value must be at least as long as the value specified for warning and less than the value specified for timeout.

       -h, -?, --help
	   Prints this usage message and exits.

       -H hostname, --hostname=hostname
	   The hostname, or IP address, of the spamd service to ping.  By default the hostname localhost is used.  If --socketpath is set this
	   value will be ignored.

       -p port, --port=port
	   The port of the spamd service to ping.  By default port 783 (the spamd default port number) is used.  If --socketpath is set this value
	   will be ignored.

       --socketpath=path
	   Connect to given UNIX domain socket.  Use instead of a hostname and TCP port.  When set, any hostname and TCP port specified will be
	   ignored.

       -t secs, --timeout=secs
	   The maximum time to wait for a ping response.  Once exceeded the program will exit with a value of 2 to indicate the critical status.
	   The default timeout value is 45 seconds.  The timeout must be no less than 1 second.

	   This value must be greater than the values specified for both the critical and warning values.

       -v, --verbose
	   Display verbose debug output on STDOUT.

       -V, --version
	   Display version info on STDOUT.

       -w secs, --warning=secs
	   Warning ping response threshold in seconds.	If a spamd ping response takes longer than the value specified (in seconds), and does not
	   exceed the critical threshold value, the program will exit with a value of 1 to indicate the warning staus.

	   This value must be no longer than the value specified for critical and less than the value specified for timeout.

EXIT CODES

       The program will indicate the status of the spamd process being monitored by exiting with one of these values:

       0   OK: A spamd ping response was received within all threshold times.

       1   WARNING: A spamd ping response exceeded the warning threshold but not the critical threshold.

       2   CRITICAL: A spamd ping response exceeded either the critical threshold or the timeout value.

       3   UNKNOWN: An error, probably caused by a missing dependency or an invalid configuration parameter being supplied, occurred in the
	   sa-check_spamd program.

SEE ALSO

       spamc(1) spamd(1) spamassassin(1)

PREREQUISITES

       "Mail::SpamAssassin" version 3.1.1 or higher (3.1.6 or higher recommended)

AUTHOR

       Daryl C. W. O'Shea, DOS Technologies <spamassassin@dostech.ca>

LICENSE

       sa-check_spamd is distributed under the Apache License, Version 2.0, as described in the file "LICENSE" included with the Apache
       SpamAssassin distribution and available at http://www.apache.org/licenses/LICENSE-2.0

perl v5.14.2							    2014-02-14						     SA-CHECK_SPAMD.RAW(1)