system $merker2;

##</code><code>##

system $merker2 == 0
    or die "Couldn't launch [$merker]: $!/$?";

##</code><code>##

sub run_command {
    my ($cmd) = @_;
    warn "Running [$cmd]\n";
    system($cmd) == 0
        or die "Couldn't launch [$cmd]: $!/$?";
};