[Pharo-users] OSProcess / OSSubprocess / LibC uniqueInstance

David T. Lewis lewis at mail.msen.com
Tue Feb 19 05:55:55 EST 2019


On Tue, Feb 19, 2019 at 11:37:38AM +0100, Albrecht Baur via Pharo-users wrote:
> From: Albrecht Baur <baur.albrecht at googlemail.com>
> Subject: OSProcess / OSSubprocess / LibC uniqueInstance
> To: pharo-users at lists.pharo.org
> Date: Tue, 19 Feb 2019 11:37:38 +0100
> 
> I need to execute OS commands from within a x64 pharo 7.01 image on 
> centos7 (for example: 'zip -r 123.zip zipme/').
> 
> I found these 3 tools: OSProcess, OSSubprocess, LibC uniqueInstance
> 
> But I did not find any docu on which one to use for which use case.
> 
>  * OSProcess is in the catalog browser but fails loading because of
>    ByteArray>>ifNotNilDo:
>    -> So OSProcess is not to be used with p7 ?

Hi Albrecht,

I am sorry that I cannot check it right now, but it may be that
ConfigurationOfOSProcess needs to be updated. The #ifNotNilDo: problem
was fixed by Thierry Goubier in July 2017, so perhaps you are using
an out of date version.

Hopefully someone else can give you a better answer, otherwise I will
try to follow up in a day or two.

Dave



> 
>  * OSSubprocess loads via catalog browser and the following snippet
>    works (even though 64 bit):
> 
> OSSUnixSubprocess new
> ?????? command: 'zip';
> ?????? arguments: #('-r' '123.zip' 'zipme');
> ?????? redirectStdout;
> ?????? runAndWaitOnExitDo: [ :process :outString?? |
> ?????? ?????? outString inspect
> ?????? ]
> 
> So is it ok to use OSSubprocess with 64 bit even though documented as 32 
> bit only ? (here: 
> https://github.com/pharo-contributions/OSSubprocess#installation)
> 
>  * LibC uniqueInstance system: 'zip -r 123.zip zipme/'
>    ... works, but I don't know if its the right tool for this.
> 
> Is there somewhere more info on which tool to use for which use case ?
> 
> Thanks in advance!
> 
> Albrecht
> 
> PS.: I need to use zip as os process only because of this issue: 
> https://github.com/pharo-project/pharo/issues/2584
> 



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