Assuming that the big regex you posted is *actually* tested against one line of command output and bug free, I'm gonna give you a skeletal example of one simple way to proceed.

But first, Perl is influenced by something called context: 

$output = `program args`;   # collect output into one multiline string
@output = `program args`;   # collect output into array, one line per 
+element

[download]
So your code probably end up in an infinite loop, because $output is a string which is evaluated as having the true boolean value inside the while() test.

Try to start with something like this instead: 
#!/usr/bin/perl
#

use strict;
use warnings;

my @output = `bpdbjobs`;

for my $line (@output) {
        chomp $line;
        my @matches = $line =~ 
/(\d+)?\s+((\b[^\d\W]+\b)|(\b[^\d\W]+\b\s+\b[^\d\W]+\b))?\s+((Done)|(A
+ctive)|(
\w+\w+\-\w\-+))?\s+(\d+)?\s+((\w+)|(\w+\_\w+)|(\w+\_\w+\_\w+))?\s+((b[
+^\d\W]+\
b\-\b[^\d\W]+\b)|(\-)|(\b[^\d\W]+\b))?\s+((\w+\.\w+\.\w+)|(\w+))?\s+((
+\w+\.\w+
\.\w+)|(\w+))?\s+(\d+)?/g;  ## <<--- Beware of the global modifier g h
+ere!
        
    if (@matches) {
        # @matches now is an array containing the captured matches
        # Pretty printing time ?
    }
}

[download]

It now should be a matter of double checking the regex correctness and maybe using some modules to help with printing, e.g.: Text::Table ?

Good luck!

In reply to Re: Turning regex capture group variables into arrays, then counting the number of objects in the array by markong
in thread Turning regex capture group variables into arrays, then counting the number of objects in the array by Djay

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