Here is what I am trying to do. I want to open the hosts file on my machine (Linux) and read the first two columns into a hash that will give me the ip address as the key, and the hostname as the value.

I've done some googling on the subject, and can't seem to find a clear answer.

I can read the contents of the hosts file into an array with no problem, but can't seem to get a good grasp of how to do so into a hash.

Here is an example of one of the things that I tried.

#!/usr/bin/perl -w

use strict;

my $hostfile = "/etc/hosts";
my %hosts = ();


open FILE, "<", "$hostfile" || die "Cannot open $hostfile $!";
while (<FILE>) {
    chomp;
    my ($key, $value) = split (" ", $_);
    $hosts{$key} = $hosts{$value};
    }
close FILE;

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In reply to How To Read Hosts File Into a Hash by at2marty

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