This is a fairly primitive way to do it:

#!/usr/bin/perl -w
use strict;

my @lines = <DATA>;

for(1..$#lines)
{
    if($lines[$_]=~m/[^\d]+\d+/){
         print qq~
           $lines[$_-3]
           $lines[$_-2]
           $lines[$_-1]
           $lines[$_]
           $lines[$_+1]
           $lines[$_+2]
         ~;
    }
}

1;


__END__
alpha
beta
something
a07607
b-alpha
b-beta
b-something
b-something else
c-alpha
c-beta
c-somethin
a9706
d-alpha
d-beta
d-something
d-something else

[download]

produces...

           alpha

           beta

           something

           a07607

           b-alpha

           b-beta

         
           c-alpha

           c-beta

           c-somethin

           a9706

           d-alpha

           d-beta

[download]

Celebrate Intellectual Diversity

In reply to Re: Grab 3 lines before and 2 after each regex hit by InfiniteSilence
in thread Grab 3 lines before and 2 after each regex hit by HarryPutnam

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