run via "watch watch-ps.pl" to view the process tree of the cron jobs running on a machine...

watch-ps.pl

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

my $search = shift || 'CRON';
my $following = 0;

for (`ps auxwwf`){
        chomp;

        $following++ if /$search/;

        if ( /\_/ ){
                print "$_\n" if $following;
        }
        else {
                $following=0 unless /$search/;
        }
}