Runtime.exec() Problem.

[Patrick W. O'Neill]

Thanks, I was unaware of that, there wasn't much documention on the web 
page.  I'll download that and see if it helps.

Pat

On Sun, 6 Sep 1998, Mike Boilen wrote:

> What version of Kaffe are you using?  I know there were a bunch of
> patches to Runtime.exec() since 1.0b1 was released.  You might want to
> try using the latest kaffe-snap and see if that helps.
> 
> Mike
> 
> 
> On Sun, Sep 06, 1998 at 10:33:50AM -0400, Patrick W. O'Neill wrote:
> > Hello, I'm relatitivly new to Java, and even moreso to Kaffe.  We have a 
> > demonstration that runs only on Linux.  This demo generates a logfile, 
> > which is read by our java program to display graphically what is going 
> > on.  Previously, we would generate the logfile on a Linux machine, and 
> > run the Java demo on Solaris with the JDK.  We would like to be able to 
> > generate the logfile on the fly, so our only option is to run the Java 
> > demo on the linux machine.  That is where Kaffe comes in.  
> > 
> > We had to do a lot of updating of our code, the books we had were 1.0 
> > books, and JDK is more forgiving of deprecated functions than Kaffe is, 
> > so we had no need to use 1.1 code until we decided to use Kaffe.  We got 
> > that all straightend out, but we're having one main problem.  We need to 
> > run our program from inside our java demo, this would lead me to using a 
> > Runtime.exec("command line") call.  This works fine under JDK, but I'm 
> > having a problem running this with Kaffe.  Here is some sample code...
> > 
> > 
> > public class Test{
> >   public static void main(String[] args) {
> >     Runtime r = Runtime.getRuntime();
> >     System.out.println("Hello World!");
> >     try {
> >       r.exec("gcc test.c");
> >     }
> >     catch(java.io.IOException e) {
> >       System.out.println(e);
> >     }
> >   }
> > }
> > 
> > No matter what the command is, we get
> > 
> > java.io.IOException: No such file or directory 
> > 
> > I just tried an example using full path names, we don't get the 
> > exception, but the command just plain doesn't get executed.
> > 
> > I also tried some code I found in the comp.lang.java.help newsgroup...
> > 
> > 
> > public class HelloWorld{
> >   public static void main(String[] args) {
> >     try {
> >       String cmd = "/usr/bin/ls -l /opt/java/bin";
> >       String line = null;
> >       Process p = Runtime.getRuntime().exec(cmd);
> >       BufferedReader lsOut = new BufferedReader
> >        (new InputStreamReader
> >           (p.getInputStream() ) );
> >       while( ( line=lsOut.readLine() ) != null) {
> >         System.out.println(line);
> >       }
> >     }
> >     catch (Exception e) {
> >         System.err.println("ls error " +e);
> >     }
> >   }
> > }
> > 
> > 
> > But I get the same error.  Any ideas as to why this might be happening or 
> > how to fix it?  Thanks.
> > 
> > 
> > Pat
> > 
> > 
>