Thank you for your reply. I changed my code to the following.

#!/usr/bin/perl -w

use strict;

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


open FILE, "<", "$hostfile" || die "Cannot open $hostfile $!";
while (<FILE>) {
    next if /^\s*#/ ; # skip comments
    chomp;
    my ($key, $value) = split (" ", $_);
    $hosts{$key} = $value;
    }
close FILE;

[download]

The output is as follows.

Use of uninitialized value $key in hash element at hash.pl line 14, <F
+ILE> line 3.
Use of uninitialized value $key in hash element at hash.pl line 14, <F
+ILE> line 11.

[download]

Why do I get the "uninitialized error" for $key?

In reply to Re^2: How To Read Hosts File Into a Hash by at2marty
in thread How To Read Hosts File Into a Hash by at2marty

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