Hi,
Unix processes dont return booleans. They return integer exit values,
wich are 0 for successfull execution and greater for failure.
java.lang.Process.exitValue() should return 0 for success, greater
for error
java.lang.Process is the obejct returned by java.lang.Runtime.exec() calls
Cezar.
On Thu, 26 Aug 1999, Joona Palaste wrote:
> At 10:56 AM 8/26/99 +0530, you wrote:
> >Hi List,
> > I would like to get the boolean value by executing a unix command
> >(ie. ls -ld servlets)
> > on a solaris machine through a servlet.
> > SAY :
> > If "servlets" directory exists then the boolean value is TRUE,
> >otherwise FALSE.
> >
> > Executing a unix command through servlets is OK. But how can I get
> >the boolean result by
> > just executing a unix command?
> > Any suggestions/code snippet?
> >
> >Thanks in Advance
> >Rajesh Kumar.
> >
> >Attachment Converted: "d:\eudora\attach\ujayra02.vcf"
>
> I asked my system administrator about this. We speculated about it a little
> and
> came to the conclusion that there is no way to do this directly from Java
> servlets, because it would breach the platform independence. What you need
> to do
> instead is to make a native program (C or C++, for example) that contains a
> function to call a Unix command and return its result. Then you should make
> this
> native program into a JNI library (see JNI tutorial at
> http://java.sun.com/docs),
> make a Java class to interface this JNI library, and use this class from your
> servlets. I don't know how to make this kind of native program on Solaris,
> so I
> can't send you a concrete example, but I've explained the principal idea here.
>
> Joona Palaste
>
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