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Full Discussion: Perl program to simulate Least Recently Loaded paging
Top Forums Shell Programming and Scripting Perl program to simulate Least Recently Loaded paging Post 302559508 by Skrynesaver on Tuesday 27th of September 2011 09:09:07 AM
Old 09-27-2011
Ahh, that's a bit more complex than the usual learning Perl question, at the risk of undoing the learning value of the exercise try the following

Code:
#!/usr/bin/perl
use strict;


# In a production system these should be validated before progessing, but for now...
print "Page access: ";
chomp(my @pa=split(/,\s+/,<STDIN>)); # assumes separated by comma and spaces as in your example
print "Frames: ";
chomp(my $frames=<STDIN>);


my @frames; # set up an array to hold an array for each frame. 
for (my$count=0;$count<$frames;$count++){ #Process the array of arrays (see perldoc perlref for details of using array references)
        for (my $index=0;$index<@pa;$index++){ #Deep copying the elements of the Page access into each frame array
                ${$frames[$count]}[$index]=$pa[$index];
        }
        @{$frames[$count]}[0 .. ($count - 1)]=split('',"-"x$count) if $count; #Set the leading irrellevant values to '-'
        for (my $index=$count;$index<@{$frames[$count]};$index+=$frames){ # go through the frame array by whatever frame size we set
                ${$frames[$count]}[$index +2 ] =${$frames[$count]}[$index+1]=$pa[$index];
        }
        #truncate the array at the size of @pa
        @{$frames[$count]}=@{$frames[$count]}[0..(@pa - 1)];
}
#Print out your results
my $count=1;
print "PA:\t",join(' ', @pa),"\n";
for my $frame_array_ref (@frames){
        print " F$count:\t",join(' ', @{$frame_array_ref}),"\n";
        $count++;
}
# I have no idea what the PF line represents, sorry

This User Gave Thanks to Skrynesaver For This Post:
guidely
 

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LEARN ABOUT DEBIAN

thpot

SHONEYPOT(8)						      System Manager's Manual						      SHONEYPOT(8)

NAME

       thpot - Tiny honeypot to setup simple (and fake) services

SYNOPSIS

       thpot [service name]

DESCRIPTION

       This  manual  page documents briefly the thpot command.	This manual page was written for the Debian distribution because the original pro-
       gram does not have a manual page.  Instead, it has documentation in the GNU Info format; see below.

       thpot is a program that enables you to fake services by configuring it to be executed through either xinetd or inetd.  All  the	connection
       attempts and sessions to simulated services are logged under /var/log/thpot.

OPTIONS

       This program takes as argument the name of the service which is being simulated, it can be anyone of shell, ftp, http, mssql, smtp, pop3 or
       ssh. If the service name is none of these a null response is returned (but the session is logged)

FILES

       /var/log/thpot
	      Location of the connections attempts and sessions to the honeypot services.

       /etc/thpot/thp.conf
	      Configuration for the honeypot

       /usr/share/thpot/
	      Miscellaneous files and functions used by thpot

SEE ALSO

       inetd.conf(5), inetd(8)

AUTHOR

       This manual page was written by Javier Fernandez-Sanguino Pen~a <jfs@computer.org>, for the Debian GNU/Linux system (but  may  be  used	by
       others).

								September 17, 2003						      SHONEYPOT(8)
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