The Jacl exec command works for me under JDK1.2/NT4.0.
One thing is that inside ExecCmd, we are throwing away the detail
message of the exception that is being thrown.
Currently, the code says:
} catch (IOException e) {
//if exec fails we end up catching the exception here
throw new TclException(interp, "couldn't execute \"" +
argv[firstWord].toString() + "\": no such file or directory");
The error message is not always true, for example
the execWin method expects that c:\temp is a writable directory.
Unfortunately, on my machine NT is installed on d: and c:\temp did
not exist until I created it.
As a result 'exec ls' was failing with the message:
couldn't execute "ls": no such file or directory
when in fact the problem was that the directory did not exist.
When I added the detail message on to the end of the TclException, it
was instantly obvious what the problem was.
% exec ls
couldn't execute "ls": no such file or directory: java.io.FileNotFoundException:
C:\TEMP\jacl1.bat (The system cannot find the path specified)
In general, this code does seem a little convoluted though. It would
be good to have another look at it.
-Christopher
--------
Well, yes and no. Exec on NT and 95 is really a mess. The problem
is not with the Jacl code but with the Sun implementation of
java.lang.Runtime.exec(). I assume from the error you are getting
that you are running JDK 1.1. JDK 1.2 fixes some of these exec problems
but also adds other problems so that is not a perfect fix. I have
been able to run the exec tests cases on a NT box here in the lab
but NT is really strange and the tests do not always work. It took
a lot of testing and debugging just to get the jacl exec to the point
it is now (take a look at the Jacl exec source, it is ugly). To be
honest, I do not think I am going to be spending any more time
getting exec working under NT or 95. If anyone else wants to work
on the problem I would be happy to give out my test cases.
Mo DeJong
gimme multimedia group
On Fri, 19 Mar 1999, Sachin Thatte wrote:
>
> Hi,
>
> Is the exec command on JACL shell supposed to work? It gives me error
> when I try to run it. I am using JACL 1.1.1 on NT. Following are
> examples. Any help is appreciated.
>
>
> % exec c:/WINNT/SYSTEM32/CMD.EXE
> couldn't execute "c:/WINNT/SYSTEM32/CMD.EXE": no such file or directory
> % exec cmd
> couldn't execute "cmd": no such file or directory
> % exec cmd.exe
> couldn't execute "cmd.exe": no such file or directory
> % exec cmd dir
> couldn't execute "cmd": no such file or directory
>
>
> Thanks,
>
> -Sachin
>
>
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