trying to identify hosts that are members of the CRIT hostgroup, or of the DMZ hostgroup

Ignoring that your text say's that, and your code 'GRID|RMAN', this might set you on your road:

#! perl -slw
use strict;

$/ = ''; ## para model see perldoc -q paragraphs

m[
    (?=^.*(DMZ|CRIT))
    (?=^.*host_name\s+(\S+))
    (?=^.*address\s+(\S+))
]sx and print "$2 [$3] is a member of $1"
    while <DATA>;

__DATA__
[snip... your sample data here]

[download]

Produces:

C:\test>junk
denlas02 [146.xxx.xxx.xxx] is a member of DMZ
ppplas12 [10.50.33.26] is a member of CRIT

[download]
With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

RIP Neil Armstrong

In reply to Re: split file on blank lines and match blocks by BrowserUk
in thread split file on blank lines and match blocks by raggmopp

Title:
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