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Full Discussion: Perl script to kill the process ID of a command after a certain period
Top Forums Shell Programming and Scripting Perl script to kill the process ID of a command after a certain period Post 302375445 by Pouchie1 on Friday 27th of November 2009 07:05:48 PM
Old 11-27-2009
Perl script to kill the process ID of a command after a certain period
All,

I am trying to build a script in perl that will alllow me to pass the IP address to a ping command and redirect the output to a file and then kill that process after a certain period of time.

let's say, I call my script ping.pl, I would like to be able to run it like this for example : ./ping.pl 127.0.0.1 60 (where 127.0.0.1 will be the ip address I want to run the ping command on and 60 will be the period is seconds I would like the ping command to run and kill process ID for this ping command after this period).

I started out like this, but it looks like when I enter the command ./ping.pl 127.0.0.1 60. Nothing never happens. When I type in the IP, hit enter and type 60, hit enter. It starts working. It creates the file, but it never stops running. The process has never been killed. Any help will be appreciated.

I would like to be able to run the script on one line command with the arguments like ./ping.pl 127.0.0.1 60 ( it could be any IP and any time).

Thanks,

#!/usr/bin/perl
$i = <STDIN>;
$j = <STDIN>;
system("ping $i > ping.pl.txt");
system("sleep $j");
system("kill -9 `ps aux |grep ping|awk '{ print $2 }' ");
 

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LEARN ABOUT DEBIAN

ocf_pacemaker_pingd

OCF_PACEMAKER_PINGD(7)					      Pacemaker Configuration					    OCF_PACEMAKER_PINGD(7)

NAME

       ocf_pacemaker_pingd - pingd resource agent

SYNOPSIS

       [OCF_RESKEY_pidfile=string] [OCF_RESKEY_user=string] [OCF_RESKEY_dampen=integer] [OCF_RESKEY_set=string] [OCF_RESKEY_name=string]
       [OCF_RESKEY_section=string] [OCF_RESKEY_multiplier=integer] [OCF_RESKEY_host_list=string] [OCF_RESKEY_interval=integer]
       [OCF_RESKEY_attempts=integer] [OCF_RESKEY_timeout=integer] [OCF_RESKEY_options=string]

       pingd [start | stop | monitor | meta-data | validate-all]

DESCRIPTION

       This agent (ocf:pacemaker:pingd) has been replaced by the more reliable ocf:pacemaker:ping. It records (in the CIB) the current number of
       ping nodes (specified in the 'host_list' parameter) a cluster node can connect to.

SUPPORTED PARAMETERS

       OCF_RESKEY_pidfile = string [/pingd-]
	   PID file

       OCF_RESKEY_user = string [root]
	   The user we want to run pingd as

	   The user we want to run pingd as

       OCF_RESKEY_dampen = integer [5s]
	   Dampening interval

	   The time to wait (dampening) further changes occur

       OCF_RESKEY_set = string []
	   Set name

	   The name of the instance_attributes set to place the value in. Rarely needs to be specified.

       OCF_RESKEY_name = string [pingd]
	   Attribute name

	   The name of the attributes to set. This is the name to be used in the constraints.

       OCF_RESKEY_section = string []
	   Section name

	   The section place the value in. Rarely needs to be specified.

       OCF_RESKEY_multiplier = integer []
	   Value multiplier

	   The number by which to multiply the number of connected ping nodes by

       OCF_RESKEY_host_list = string []
	   Host list

	   The list of ping nodes to count. Defaults to all configured ping nodes. Rarely needs to be specified.

       OCF_RESKEY_interval = integer [1]
	   ping interval in seconds

	   How often, in seconds, to check for node liveliness

       OCF_RESKEY_attempts = integer [2]
	   no. of ping attempts

	   Number of ping attempts, per host, before declaring it dead

       OCF_RESKEY_timeout = integer [2]
	   ping timeout in seconds

	   How long, in seconds, to wait before declaring a ping lost

       OCF_RESKEY_options = string []
	   Extra Options

	   A catch all for any other options that need to be passed to pingd.

AUTHOR

       Andrew Beekhof <andrew@beekhof.net>
	   Author.

Pacemaker Configuration 					    04/17/2012						    OCF_PACEMAKER_PINGD(7)
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