Monks!
Here are few of the lines of a config file i need to scan :
interface Vlan1
 no ip address
 no ip route-cache
 shutdown
!
interface Vlan12
 ip address 68.142.192.79 255.255.255.0
 no ip route-cache
 shutdown
!
interface Vlan8
 ip address 68.142.192.79 255.255.255.0
 no ip route-cache
!

[download]
I need to create a hash of keys for eg : Vlan8,Vlan12 (not Vlan1) and value containing : 8,12 respectively. Only those key-value pair gets stored which has an ip address given in the next 1 or more lines. I tried the following :
while(<IN>)
{
my ($key) = /^(interface Vlan[\d]*)/;
next if $key =~ /^\s ip address \d*\.\d*\.\d*\.\d* \d*\.\d*\.\d*\.\d*/
+;
# next if $key =~ /^\s*$/;
my ($value) = /^interface Vlan([\d]*)/;
$hash1{$key} = $value ;
}

[download]

but keep getting the following result :
interface Vlan1 => 1
interface Vlan8 => 8
interface Vlan12 => 12

[download]
I dont' want Vlan1. plz. help!

In reply to create key-value pair by nidhi

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.