Are you sure the process isn't waiting for input from an interactive
(TTY-attached) STDIN stream?
Try sending ^D (CTRL+D), which should tell it that it's reached EOF. I
don't know much about Java, only that it's weird and gross (so I have to
assume writing to /dev/stderr or even /dev/console doesn't work as
expected...)
On Sat, 18 Dec 2021, 1:10 am Blake McBride, <bl...@mcbride.name> wrote:
> Greetings,
>
> I have been calling groff from java for a long time. Works well. However,
> recently I passed an errant file to groff through java and the process is
> hanging. When run from the command line it works as expected. But when I
> run it through java it hangs. I'm at a loss. Any help would sure be
> appreciated.
>
> The Java code (Main.java):
>
> public class Main {
>
> public static void main(String [] argv) throws Exception {
> ProcessBuilder builder = new ProcessBuilder("groff", "-mm", "-t",
> "-Tpdf", "file.mm");
> Process p = builder.start();
> p.waitFor();
> System.out.println("Done.");
> }
> }
>
>
> It hangs on the p.waitFor(). If I do a "ps lax |grep groff" I see groff is
> still running (hung).
>
> I am attaching file.mm I know it is wrong, but it shouldn't cause a hang.
>
> Sure appreciate any help!
>
> Blake McBride
>
