$ perl -e '
    use strict;
    use warnings;
    use autodie ":all";

    my @hosts = qw{8.8.8.8 8.8.4.4};
    my $command = join ";", map "ping -c3 ".$_, @hosts;
    my $result = qx{$command};

    my $re = qr{(?s:^(\S+).+?(\S+)\s+ms\s*$)};
    my $fmt = "%s min:%s avg:%s max:%s mdev:%s\n";
    open my $mh, "<", \$result;

    {
        local $/ = "PING ";
        while (<$mh>) {
            chomp;
            next unless /$re/;
            printf $fmt, $1, split /\//, $2;
        }
    }
'
8.8.8.8 min:16.929 avg:17.290 max:17.585 mdev:0.272
8.8.4.4 min:15.392 avg:15.856 max:16.284 mdev:0.365