my $cmd = ["/usr/bin/mini-journalreader"];
push @$cmd, '-n', $param->{lastentries} if $param->{lastentries};
push @$cmd, '-b', $param->{since} if $param->{since};
my $cmd = ["/usr/bin/mini-journalreader"];
push @$cmd, '-n', $param->{lastentries} if $param->{lastentries};
push @$cmd, '-b', $param->{since} if $param->{since};