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Re: Executing bash bash script from emacs / elisp


From: Rainer M Krug
Subject: Re: Executing bash bash script from emacs / elisp
Date: Fri, 03 Sep 2010 14:41:16 +0200
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On 03/09/10 13:42, Deniz Dogan wrote:
> 2010/9/3 Rainer M Krug <address@hidden>:
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>> On 03/09/10 13:09, Deniz Dogan wrote:
>>> 2010/9/3 Rainer M Krug <address@hidden>:
>>>> Hi
>>>> I am a complete beginner concerning elisp - so please bear with me if
>>>> this is a simple question.
>>>>
>>>> I would like to execute a shell (bash) script from elisp, which is then
>>>> called from org-babel to do some post-processing of the result of
>>>> tangling. Tangling in org-babel has a hook for post-processing, and I
>>>> know how to set it. Therefore I am simply looking for a way of executing
>>>> my shell script from that hook.
>>>>
>>>> essentially:
>>>>
>>>> this-function-executes-a-shell-script(The_Shell_Script.sh)
>>>>
>>>> Thanks,
>>>> Rainer
>>>>
>>>>
>>>>
>>>
>>> You want to look at the functions `call-process-shell-command' and
>>> `call-process'.
>>>
>>> Example:
>>> (call-process-shell-command "the_shell_script.sh" nil nil nil "arg1" "arg2")
>>>
>>> That's equivalent to running "the_shell_script.sh arg1 arg" in a shell.
>>>
>>
>> Thanks a lot. After looking around I also found async-shell-command and
>> shell-command. Am I right in assuming that, as the script is not
>> producing any output, these commands are equivalent?
>>

Dear Mannon and Deniz

Thanks a lot for your input.

> 
> Those two functions are interactive, i.e. they can be called by the
> user directly using e.g. M-x shell-command. Nothing stops you from
> using them, but they both basically just wrap call-process in a bunch
> of user interaction handling.

OK - I understand

> 
>> In addition, when using async-shell-command I get asked "A command is
>> running. Kill it? (yes or no)"
>> Is there any way to avoid this?
>>
> 
> Yes, it should be enough to simply set the OUTPUT-BUFFER argument to
> nil to tell Emacs not to print the output anywhere, hence not creating
> a buffer for the process.
> 

Thanks - I am using call-process-shell-command and if I set the BUFFER
to 0, it backgrounds as I want it

Cheers,

Rainer

- -- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation
Biology, UCT), Dipl. Phys. (Germany)

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