On Sun, Aug 22, 2010 at 9:10 PM, David T. Lewis <lewis@mail.msen.com> wrote:

Mariano,

Please forward this to the Pharo-users list if it does not go through. I just subscribed a few minutes ago, but I don't know if the mail will go through yet.

Hi David. Yes, the email went to the mailing list :)

Dean,

I have not yet made a ConfigurationOfCommandShell (but I guess that I should). Mean time you can use a Monticello browser to load the package directly from SqueakSource. Pharo does not have an MVC environment, and the errors that you are seeing are a result of this. To avoid the problem just load the individual CommandShell packages, and do not load the MVC part. That means that you should load OSProcess first, and then load just these packages from SqueakSource/CommandShell:

Coool ! you finally split the packages in CommandShell :) That's good for pharo users. Thanks david. mariano

CommandShell-Base CommandShell-Commands CommandShell-Piping CommandShell-UI CommandShell-Morphic CommandShell-Tests

There is plenty of support for piping in CommandShell. Look through the class side methods in classes CommandShell and PipeableOSProcess. The information at http://wiki.squeak.org/squeak/1914 should give a good overview.

To answer your specific question, popen() is implemented as a primitive in the OSProcessPlugin, which is distributed with most Unix and Mac VMs. The primitive is #primitiveCreatePipe, which is called by UnixOSProcessAccessor>>primCreatePipe. The higher level classes in OSProcess and CommandShell make use of this to create pipes and to do things like connecting pipes from external processes (e.g. the stdout from some command that you might run) to the virtual machine, thus making it available to the Squeak/Pharo image.

Dave

On Fri, Aug 20, 2010 at 10:06:48PM +0200, Mariano Martinez Peck wrote:

...

Maybe David can gelp you.

On Fri, Aug 20, 2010 at 9:06 AM, Dean Powell <powelldean@yahoo.com> wrote:

...

Hi:

I'm using Pharo-1.1 OneClick on Ubuntu 10.04. One project I am looking at would require the use of external commands. It appears I can use something like "ExternalUnixOSProcess command: 'do_something --option'" etc. I can perform external commands, but output from these still goes to stdOut. I looked into using CommandShell, but when I try and use this I get grumblings about not findng PluggableTextController and PluggableTextView.

Using OSProcess or a subclass, is there a way I can launch an external command but capture the output (say, to a variable)? Does Pharo yet have the equivalent of the c popen() command?

Is there a way to load CommandShell without it grumbling about the two packages mentioned above?

Any information would be appreciated.

Best Regards, Dean Powell Edmonton, Canada