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sub process_command_line_args {
    #set default values for dynamic config settings
...
    my @args = ($layout,$wait_for_child,$wait_for_exec,$name,$prompt,$
+configf,$quiet,$outf,$debug,$batchsize,$proto,$tacacs,$verbose,$heade
+r,$mailref,$path);
    return \@args;
}

sub Main {
    my %CONFIG;
...
    )
    ...
}

$WARN = 0; #supress flow control warning in following block due to exi
+ting anon sub
LOOPCTRL: while ($lb < 10){
...
    );
}
$WARN = 1; # reset to default

while (...) {
    next if $exp->expect(...
...
        ...
    );
}

use strict;
use warnings;
...
}

# warnings coming from here will be printed

  # Don't warn about exiting subs via loop control:
  no warnings 'exiting';
  
  # Don't warn about using undef in numeric or string operations:
  no warnings 'uninitialized';

{
  local $SIG{__WARN__} = sub {};
...
}

# warnings coming from here will not be affected

\%{ $CONFIG }
\%$CONFIG

my $range = '1000000';
my $rand = int(rand($range)); ##generate random temp-db filename to al
+low for simultanous script execution

...
  tempdb => "$path/$rand.db",

my $foo = $_[0];

my $foo = shift;

my ($foo) = @_;