Ubuntu GKSU Java System.err.println() not working

Asked Jul 31 '14 at 22:28

Active Jul 31 '14 at 22:45

Viewed 81 times

I have a very simple program here:

public class Test {
    public static void main(String[] args) {
        System.err.println("HI");
    }
}

When I execute this with the following command: gksu "java Test.class" and enter in my password, it does not return "HI" as expected. What am I doing wrong here? I am stumped. The reason I am using gksu and not just normal java is because I want to launch my program as root from eclipse. I followed this answer and this is my outcome. My original program is a lot bigger than this. This is just a demo to display the problem.

edited May 23 '17 at 12:04

Community

asked Jul 31 '14 at 22:28

Christopher Smith

Isn't that for graphical commands? I'd expect it would be swallowing both stdout and stderr, but maybe it doesn't. – Dave Newton Jul 31 '14 at 22:33
@Dave Newton `System.out.println("HI");` works just fine – Christopher Smith Jul 31 '14 at 22:34
Added my reason for using `gksu` instead of normal `java` – Christopher Smith Jul 31 '14 at 22:37
Same behavior if you use sudo instead of gksu? – Dave Newton Jul 31 '14 at 22:39
`sudo` outputs "HI" unlike `gksu` – Christopher Smith Jul 31 '14 at 22:44
Yeah, I'm not convinced gksu is what you'd want to use for a non-graphical program. – Dave Newton Jul 31 '14 at 22:47
It is a graphical program, I am just using this program for a demo for this site. Using the original program, `System.err.println()` does not work either. – Christopher Smith Jul 31 '14 at 22:53
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/58456/discussion-between-christopher-smith-and-dave-newton). – Christopher Smith Jul 31 '14 at 22:56

Ubuntu GKSU Java System.err.println() not working

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