Thanks David and Juan, I was trying to run a pandoc conversion from markdown to html and I had an error inside my command. Once corrected it works without any problem and generates the desired file. One note on adding "exec" is that I get this message on the playground: "an ExternalUnixOSProcess with pid 21552 on /bin/sh (complete, normal termination with status 0)" which seems better. Despite of both working I will use the exec suggestion to have a better message from external process. Cheers, Offray On 11/02/2014 06:40 PM, Juan Ignacio Vaccarezza wrote:

Hi Offray I had some issues controlling the process's life cycle and I fixed using the "exec" linux program. I'm using something like: OSProcess command: 'exec programToExecute'. Then I'm able to kill the process correctly and query the status.

Hope it helps.

Regards, Juan.

On Sun, Nov 2, 2014 at 7:54 PM, Offray Vladimir Luna Cárdenas <offray@riseup.net <mailto:offray@riseup.net>> wrote:

Hi all.

I'm having problems with OSProcess. When I run "OSProcess command: 'my command'" on Linux, the Moose playground says that "an ExternalUnixOSProcess with pid 20887 on /bin/sh (running)", but the external process never ends. What I'm missing?

Cheers,

Offray

Hi, Thanks Dave. Your detailed explanation helped me to understand what was going in. The problem was that I don't use /bin/sh as my default shell, so there was no process associated to it (/bin/zsh was the parent of all shell process including launching Pharo). Now I have changed the way I use to launch pharo from my zsh shell. It goes something like this: /bin/sh ~/Programas/Pharo/pharo-ui ~/Programas/Moose/5.0/moose-5.0.image Now is working well. The only thing is that the last process is always running, so I put an 'echo "something"' as the last argument of the OSProcess command: to get all previous commands working instead of making all but the last one (which waits forever and exec doesn't work). Cheers, Offray On 11/02/2014 08:17 PM, David T. Lewis wrote:

On Sun, Nov 02, 2014 at 07:28:44PM -0500, Offray Vladimir Luna C??rdenas wrote:

...

Thanks David and Juan,

I was trying to run a pandoc conversion from markdown to html and I had an error inside my command. Once corrected it works without any problem and generates the desired file. One note on adding "exec" is that I get this message on the playground:

"an ExternalUnixOSProcess with pid 21552 on /bin/sh (complete, normal termination with status 0)"

which seems better. Despite of both working I will use the exec suggestion to have a better message from external process.

Using the exec shell command is a good idea. Just for information, the ExternalUnixOSProcess object is a proxy for the real external OS process, which started by running the /bin/sh program. When you use exec to run your pandoc program, the pandoc program will begin running in the same external OS process that was originally running the /bin/sh program. The ExternalUnixOSProcess object does not know that you did this, so it still displays itself as "an ExternalUnixOSProcess ... on /bin/sh" even though the OS process is now actually running your pandoc program instead. But the exit status 0 came from your pandoc program, which is exactly what you wanted.

Dave