C:\test>type \perl64\bin\p1.pl
#! perl -slw
use 5.010;
no warnings 'portable';
use feature qw[ say state ];
use threads;
use threads::shared;
#use strict;
#use Win32::API::Prototype;
use Time::HiRes qw[ time sleep ];
use Benchmark qw[cmpthese];
use Data::Dump qw[ pp ]; ##$Data::Dump::MAX_WIDTH = 200;
#use Data::Dumper;
use Devel::Size qw[ size total_size];
use List::Util qw[ sum reduce max min maxstr minstr shuffle ];

sub mem{ `tasklist /nh /fi "PID eq $$"` =~ m[(\S+ K)$] }

$| = 1;
$" = $, = ' ';#"
$TOOK = 0;
my( $took, $start, $end ) = ( '', 0, 0 );
while( 1 ) {
    $took = $TOOK ? $end - $start : '';
    $_code = '';
    printf "[%s]{%s} Perl> ", $! || $@ || $? || 0, $took;
    $_code .= <STDIN> until $_code =~ m[;;\s*$];
    chomp $_code;
    system 1, 'cmd /k' and next if $_code =~ m[^!!;;\s*$]s;
    if( $_code =~ m[^!(.+);;\s*$]s ) {
        my $cmd = $1;
        $cmd =~ s[(\$\w+)][$1]gee;
        system "cmd.exe /c $cmd";
        $! = ($? << 8);
        next;
    }
    last if $_code =~ m[^(quit|exit|q);;\s*$];
    $! = 0;
#    eval {
        local $ENV{ PERL_SIGNALS } = 'unsafe';
        local $SIG{ INT } = sub{die;};
        $start = time;
        eval $_code;
        $end = time;
#    };
}