Mini Shell

#!/usr/bin/perl -w

use strict;
die unless @ARGV;

my ( $mod, @args ) = @ARGV;

eval "require $mod";
die $@ if $@;

$a = substr( join( "", "a" .. "z", ) x 800, 0, 8 * 1024 );
my $count = 4 * 1024;

use Time::HiRes qw(time);

my $before = time;
my $ctx    = $mod->new(@args);
for ( 1 .. $count ) {
    $ctx->add($a);
}
print $ctx->hexdigest, "\n";

my $sec   = time - $before;
my $bytes = length($a) * $count;

print "$bytes/$sec\n";

my $vers = do { no strict 'refs'; ${ $mod . '::VERSION' } };
printf "$mod $vers\t%.2f MB/s\n", $bytes / ( 1024 * 1024 * $sec )