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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

macping

MACPING(1)						      General Commands Manual							MACPING(1)

NAME

       macping - A tool for pinging other RouterOS or mactelnetd devices

SYNOPSIS

       mactelnet [options] <MAC-Address|hostname>

DESCRIPTION

       This  tool  enables  you to ping other RouterOS or MAC-Telnetd enabled devices. You can ping either a hostname or a MAC address.  If speci-
       fied, the hostname (identity) will be looked up via MNDP discovery.

OPTIONS

       These programs follow the usual GNU command line syntax.  A summary of options is included below.

       -f     Fast mode, do not wait before sending next ping request. The next ping will be sent immediately when the last ping is received. This
	      cannot be used with -c 0

       -s     Specify the amount of bytes to send in each ping packet, up to ~1400 bytes.

       -c     Number of packets to send before exiting. A value of 0 means unlimited packets and the tool must be exited with Control + C.

       -h     Show summary of options.

       -v     Show version of program.

SEE ALSO

       mndp(1), mactelnet(1), mactelnetd(1).

AUTHOR

       macping was written by Hakon Nessjoen <haakon.nessjoen@gmail.com>.

       This manual page was written by Hakon Nessjoen <haakon.nessjoen@gmail.com>, for the Debian project (and may be used by others).

								 February 27, 2011							MACPING(1)
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