Hello sandeepda, and welcome to the Monastery!

If I’ve understood your question correctly, the following script should give you an idea of how to proceed:

#! perl
use Modern::Perl;

my %ports;

while (<DATA>)
{
    next unless /^http/;
    my @records = split /\s+/;

    if (exists $ports{$records[2]})
    {
        warn "Attempt to give port $records[2] a second name";
    }
    else
    {
        $ports{$records[2]} = $records[0];
    }
}

say join(' and ', get_listener_name($_)) for 6712, 4516;

sub get_listener_name
{
    my ($port_to_be_checked) = @_;
    my  @results = ('FALSE', 'a1=null');

    if (exists $ports{$port_to_be_checked})
    {
        @results = ('TRUE', 'a1=' . $ports{$port_to_be_checked} . '(li
+stener name)');
    }

    return @results;
}

__DATA__
name ip port 
------------------------------------ 
http-listener-1 * 6712 
http-listener-2 * 8709

[download]

Output:

21:40 >perl 486_SoPW.pl
TRUE and a1=http-listener-1(listener name)
FALSE and a1=null

21:40 >

[download]

Hope that helps,

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

In reply to Re: Need help in parsing an input by Athanasius
in thread Need help in parsing an input by sandeepda

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