I'm writing a script which will:
1. Generate arguments to be passed to another program.
2. Run the second program with arguments.
3. Write the output to the current directory.

Here is an example of the input to the script:

cat1-dd1 as boston1-nta1 peer 10
dog1-dd1 as philly-snta1 peer 10
bird-dd1 as philly-snta1 peer 10
fish-dd1 as boston1-nta1 peer 10

Heres the code: 
#!/usr/local/bin/perl -w

use strict;

my $config = $ARGV[0];
my $date = $ARGV[1];
my $program = "animals";
my $matrix = "netmatrix";
my $path = "path";
my %hash;
my $host;
my $key;

die "Usage: $0 path-to-config-file yyyymmdd\n" unless @ARGV == 2;
open (CONFIG, $config) || die "Cannot open $config_file:$!\n";
while (my $line = <CONFIG>) {
    
    chomp $line;
    next if ($line =~ /^\#/);
    my ($router, $cache, $nta, $as, $Sample) = split (' ', $line);
    $host = (split "-", $nta)[0];
    $host =~ tr/0-9//d;
    $hash{$router}=$host;
}

foreach $key (keys %hash) {

print "$program $hash{$key} $matrix $path/CISCO_$key.clean"; 
####I'll execute the program here, once this is figured out
}

[download]
Which produces the following output:

animals boston netmatrix path/CISCO_fish-dd1.clean
animals philly netmatrix path/CISCO_dog1-dd1.clean
animals philly netmatrix path/CISCO_bird-dd1.clean
animals boston netmatrix path/CISCO_cat1-dd1.clean

What I want to do is test for the existence a duplicate key value, and if so, append $path/CISCO_$key.clean to the end of the statement:

animals philly netmatrix path/CISCO_dog1-dd1.clean path/CISCO_bird-dd1.clean
animals boston netmatrix path/CISCO_fish-dd1.clean path/CISCO_cat1-dd1.clean

Can anyone help out?

In reply to Append Logic by Anonymous Monk

Title:
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