#!/usr/bin/perl
use warnings;
use strict;

open my $PIPE, '-|', 'system_profiler SPApplicationsDataType 2> /dev/null' or die "Cannot open pipe from 'system_profiler' $!";

my ( $i, $p );
while ( <$PIPE> ) {
    $i += /\A\s{4}\S.*:\Z/;
    $p += /\A\s+Kind: PowerPC\Z/;
    }

close $PIPE or warn $! ? "Error closing 'system_profiler' pipe: $!"
                       : "Exit status $? from 'system_profiler'";

print "$i applications, $p PowerPC applications\n\n";