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!

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