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use Data::Alias qw( alias );
use Devel::Peek qw( Dump );
...
  REFCNT = 2
  FLAGS = (PADBUSY,PADMY,IOK,pIOK)
  IV = 4

sub gc_frac {
    local $_ = @_? shift : $_;
    2 * (() = /(gc)/gi ) / length;
}
print gc_frac('AAgcTT'),$/

0.333333333333333
$ 

>>-----ASSIGN-----+---------------+----+--user-id--->
                  '--WITH REGRET--'    '--group-id-->

>---password---------+-------NO PRIVILEGE----------><
>---group-password---'

$ perl -e'alarm 1;printf "Num: %d\tTime left: %f\n", select undef, und
+ef, undef, 3.0'
Alarm clock
$ 

$ time perl -e'alarm 5;printf "Num: %d\tTime left: %f\n", select undef
+, undef, undef, 3.0'
Num: 0    Time left: 0.000000
$ 

$ perl -e'$SIG{ALRM}=sub {};alarm 1;printf "Num: %d\tTime left: %f\n",
+ select undef, undef, undef, 3.0'
Num: -1    Time left: 2.000000
$ 

#!/usr/bin/perl
use strict;
use warnings;
...
1 ARRAY(0x804b50c) at hlw.pl line 13.
1 ARRAY(0x804b50c) at hlw.pl line 15.
Wrapped getter reports QUUX, and backdoor shows Quux

ssize_t rd = 0;
size_t sofar = 0;
while (rd = read( fd, buf + sofar, BUFSIZE - sofar)) {
...
                        sofar += rd;
        }
}

PRE { 
  background-color: #CCEECC;
...
H4 {font-size: 18pt}
H5 {font-size: 14pt}
H6 {font-size:  8pt}

sub fixxml
{ # fix the xml nodes so they parse correctly
...
$xml =~ y/\x00-\x1f//d; # strip control chrs
return $xml; # to the xml parser
}

#!/usr/bin/perl -w

...
    );

print "@{[common(@foo)]}$/";

# Constants and functions transcribed from linux 2.4 asm-i386/ioctl.h 
+macros
use strict;
...

1;
__END__

{$_="r\@56O4\@FCE6DJO\@7OE96O!6C=>\@?<DO|@?2DE6CJ\n",y, -},O-} -N,,pri
+nt}