#!/usr/bin/perl

use strict; # https://perlmonks.org/?node_id=11140267
use warnings;

my %answer;
while( <DATA> )
  {
  my (undef, $two, $three) = split /,|\n/;
  $answer{$three}{$two}++;
  }

my $thirty = 1; # FIXME 1 for testing, should be 30

for my $href ( values %answer)
  {
  delete @{$href}{ grep $href->{$_} <= $thirty, keys %$href }
  }
delete @answer{ grep 0 == %{ $answer{$_} }, keys %answer };
$_ = [ keys %$_ ] for values %answer;

use Data::Dump 'dd'; dd \%answer;

__DATA__
702005010683593,5016683593,7020000024140
702005010640383,5016640383,7020000024150
310005010532143,5016532143,7020000034001
702005010637702,5016637702,7020000034001
702005010608274,5016608274,7020000034013
702005010608274,5016608274,7020000034013
310005010609604,5016609604,7020000034013
702005010510869,5016510869,7020000034013
702005010551513,5016551513,7020000034130
702005010551513,5016551513,7020000034130
702005010679719,5016679719,7020000034222
702005010527052,5016527052,7020000034222
702005010645458,5016645458,7020000034222
[download]

Outputs:

{ "7020000034013" => [5016608274], "7020000034130" => [5016551513] }
[download]

Here's another way...

#!/usr/bin/perl

use strict; # https://perlmonks.org/?node_id=11140267
use warnings;

my $file = <<END;
702005010683593,5016683593,7020000024140
702005010640383,5016640383,7020000024150
310005010532143,5016532143,7020000034001
702005010637702,5016637702,7020000034001
702005010608274,5016608274,7020000034013
702005010608274,5016608274,7020000034013
310005010609604,5016609604,7020000034013
702005010510869,5016510869,7020000034013
702005010551513,5016551513,7020000034130
702005010551513,5016551513,7020000034130
702005010679719,5016679719,7020000034222
702005010527052,5016527052,7020000034222
702005010645458,5016645458,7020000034222
END

open my $fh, '<', \$file or die; # FIXME change for your file
my $thirty = 1; # FIXME 1 for testing, should be 30
my (%answer, %lines);
$lines{ /,(.+)/ ? $1 : die "bad data <$_>" }++ while <$fh>;
for ( keys %lines )
  {
  my ($value, $key) = split ',';
  $lines{$_} > $thirty and push @{ $answer{$key} }, $value;
  }
use Data::Dump 'dd'; dd \%answer;
[download]

Hello, Thanks again for your help, I really appreciate it. I hate to bother ask, but is there a way to output without the use of Data::Dump? The issue is that the server where the script is hosted is on a private lan network which does not have access to the internet, I need to vpn in to work on it remotely, so I cannot install the module on the server. That's why I had the module use Excel::Writer::XLSX; because I was going to output to excel file as a report. I couldn't test the script. :(

use Data::Dumper instead, it's core, hence always installed.

Cheers Rolf
_{(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery}

Thank you very much. I really appreciate all your help. With this part of the script done, I can continue with the other parts. Thanks again and God bless. :)

The data in the text file is the same as before. Nothing different. The error i get is.

bad data </home/vlr/archive/temp.txt> at ./vlr-cdma-test.pl line 32, <$fh> line 1.

These are my codes. #vlr-cdma-parse.pl

#!/usr/bin/perl -w
use strict;
use warnings;
use Text::ParseWords;

my $dir = "/home/vlr/archive/";

my $date = "20211201";
chomp($date);

# Check directory for relevant files
opendir(DIR, $dir) or die "Could not open ".$dir."\n";
my @dir = grep(/^USRINF.*.$date.*.1700.txt$/, readdir DIR);
closedir DIR;

my $file = $dir."temp.txt";

open my $FH, '>', $file;
foreach $_(sort @dir){
    my $DFile = $dir.$_;
    print "Processing: ".$DFile."\n";
    # Open Data File and parse each line
    open my $DF, '<', $DFile or die "Can't open $DFile $!";
    foreach $_ (<$DF>){
        chomp( $_ );
        if((length $_ > 0)&&($_ =~ /^\d{15}/)){
            $_ =~ s/\s+/;/g;
            my($imsi,$mdn,$sec) = (quotewords('[\t;]+|,\s', 0, $_))[0,
+1,3];
            if((($imsi =~ /^\d{15}/)&&($imsi =~ /^(702|310)/))&&(($mdn
+ =~ /^\d{10}/)&&($mdn =~ /^(501)/))){
                print $FH $imsi.",".$mdn.",".$sec."\n";
            }
        }
    }
    close $DF;
}
close $FH;
[download]

Then I would like to call the text file with your code. #vlr-cdma-test.pl

#!/usr/bin/perl -w

use strict; # https://perlmonks.org/?node_id=11140267
use warnings;
use Data::Dumper qw(Dumper);

my $dir = "/home/vlr/archive/";
my $file = $dir."temp.txt";

open my $fh, '<', \$file or die; # FIXME change for your file
my $thirty = 1; # FIXME 1 for testing, should be 30
my (%answer, %lines);
$lines{ /,(.+)/ ? $1 : die "bad data <$_>" }++ while <$fh>;
for ( keys %lines )
  {
  my ($value, $key) = split ',';
  $lines{$_} > $thirty and push @{ $answer{$key} }, $value;
  }

open my $FH, '>', 'output.txt';
    print $FH Dumper(\%answer);
close $FH;
[download]

Yep, Remove the backslash before $file in the open statement.

Hi again. When I run your script it works fine, but when I try to call a text file from the directory where the data is previously stored I get the "bad data" error. Is there something I changed which is causing this error? How can I use the data from a called text file?

#!/usr/bin/perl -w

use strict; # https://perlmonks.org/?node_id=11140267
use warnings;
use Data::Dumper qw(Dumper);

my $dir = "/home/vlr/archive/";
my $file = $dir."temp.txt";

open my $fh, '<', \$file or die; # FIXME change for your file
my $thirty = 1; # FIXME 1 for testing, should be 30
my (%answer, %lines);
$lines{ /,(.+)/ ? $1 : die "bad data <$_>" }++ while <$fh>;
for ( keys %lines )
  {
  my ($value, $key) = split ',';
  $lines{$_} > $thirty and push @{ $answer{$key} }, $value;
  }

open my $FH, '>', 'output.txt';
    print $FH Dumper(\%answer);
close $FH;
[download]

open my $fh, '<', $file or die; # FIXME change for your file
[download]

Remove the backslash, it is only used when you are treating a string as a file.

Are the lines in the data file in a different format than the lines you showed as an example?

Also, please show the complete line with the "bad data" error message, it will also show the line it thinks is bad.

Hi, I don't think it is reading the text file. This was the output.

$VAR1 = {};

Thanks for taking the time to help.

That would happen if there were no duplicates in your file.

#!/usr/bin/perl -w
use strict;
use warnings;
use Text::ParseWords;
use POSIX qw/strftime/;
use Excel::Writer::XLSX;

my $dir = "/home/vlr/archive/";
my $date = "20211201";

# Check directory for relevant files
opendir(DIR, $dir) or die "Could not open ".$dir."\n";
my @dir = grep(/^USRINF.*.$date.*.1700.txt$/, readdir DIR);
closedir DIR;

my %btssec;

foreach $_(sort @dir){
    my $DFile = $dir.$_;
    print "Processing: ".$DFile."\n";
    # Open Data File and parse each line
    open my $DF, '<', $DFile or die "Can't open $DFile $!";
    foreach $_ (<$DF>){
        chomp( $_ );
        if((length $_ > 0)&&($_ =~ /^\d{15}/)){
            $_ =~ s/\s+/;/g;
            my($imsi,$mdn,$sec) = (quotewords('[\t;]+|,\s', 0, $_))[0,
+1,3];
            if((($imsi =~ /^\d{15}/)&&($imsi =~ /^(702|310)/))&&(($mdn
+ =~ /^\d{10}/)&&($mdn =~ /^(501)/))){
                #print $imsi.",".$mdn.",".$sec."\n";

=pod  # The part below is the part of the script I need help with to p
+rocess the parsed data whose output I'm posted as the snippet to proc
+ess.

                if(!exists($btssec{$sec})){
                    print "New key:" . $sec ."\n";
                    $btssec{$sec} = $mdn;
                }elsif(exists($btssec{$sec})){
                    #push( @{$btssec{$sec}}, $mdn );
                }
=cut
            }
        }
    }
    close $DF;
    
    print "$_\n" for keys %btssec;
}
[download]