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Full Discussion: Hashes help in Perl
Top Forums Shell Programming and Scripting Hashes help in Perl Post 302301310 by KevinADC on Thursday 26th of March 2009 01:11:14 PM
Old 03-26-2009
I generally do not write any code for someone that has demonstrated no effort to first try and solve, or to at least start, there own code. But here something that is meant only as an example of how to create a hash of hash of arrays from your log file:

Code:
my %hash;
while(<DATA>){
   chomp;
   my ($domain,$page,$h,$m) = split(/[\/:]/);
   push @{$hash{$domain}{$page}},"$h:$m";
}
foreach my $domain (keys %hash) {
   print "$domain\n";
   foreach my $page (keys %{$hash{$domain}}){
      print "\t$page @{$hash{$domain}{$page}}\n";
   }
}
__DATA__
www.google.com/test1.asp:11:27
www.google.com/test2.asp:11:27
www.google.com/test2.asp:11:27
www.google.com/test2.asp:11:28

There are any number of data strucutes you could try and use, which one you eventually use depends on your programming requirements. A more complete hash of hashes/arrays might be better suited for the purpose but I like to keep data structures as simple as possible for the task at hand. If you know you will need to scale up the program in the future you could add any fields to the data structure now that will be used later.
 

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LEARN ABOUT DEBIAN

smd-loop

smd-loop(1)						 Sync Mail Dir (smd) documentation					       smd-loop(1)

NAME

       smd-loop - iterates smd-pull and smd-push

SYNOPSIS

       smd-loop [-vt]

DESCRIPTION

       smd-loop  runs  smd-push and smd-pull at regular intervals as defined by the user in the ~/.smd/loop configuration file. On errors that are
       reported to be transient, it retries a second time before failing.

       The configuration file is line-oriented. Each line is composed of three space separated fields:	pull-frequency,  push-frequency  and  end-
       point-name. Frequencies are expressed in minutes, while endpoint name is a valid name for smd-pull(1) and smd-push(1). Lines beginning with
       # are considered as comments. The following example calls the command smd-pull default every 3 minutes,	and  smd-push  default	every  10.
       Example:

	   # pull-frequency push-frequency endpoint-name
	     3		    10		   default

OPTIONS

       -v     Increase program verbosity (printed on stderr)

       -t     Just create a template configuration file if none

FILES

       ~/.smd/loop

SEE ALSO

       mddiff(1), smd-server(1), smd-client(1), smd-push(1), smd-pull(1)

AUTHOR

       Enrico Tassi <gares@fettunta.org>

								   11 June 2012 						       smd-loop(1)
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