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Re: singleton for script with shebang


From: Bradley Asztalos
Subject: Re: singleton for script with shebang
Date: Fri, 2 Jan 2015 01:44:13 -0800

Ole,

Thank you for the great product. It's a joy to use and thank you for administering the forum so well.

Cheers, 

Bradley Asztalos

On Fri, Jan 2, 2015 at 1:29 AM, Bradley <brad@customweather.com> wrote:
Agreed "Doh!"



> On Jan 2, 27 Heisei, at 12:48 AM, Ole Tange <ole@tange.dk> wrote:
>
> On Thu, Jan 1, 2015 at 10:54 PM, Bradley Asztalos
> <brad@customweather.com> wrote:
>
>> But I'm wondering if it is possible to use shebang in this context as in:
>
> It is.
>
>> -------singleton.sh---------
>>
>> #!/opt/local/bin/parallel --shebang-wrap /bin/bash --semaphore --fg -u --id
>> lock_id
>> echo "start" $$
>> sleep 10
>> echo "end" $$
>>
>> ---------
>>
>> This does not work. Any ideas here?
>
> You are going to say 'Doh'.
>
> /bin/bash is not an argument for --shebang-wrap. It is the command you
> want to be run. Also --semaphore --fg -u --id are not options for
> bash. Swap them around and you are good:
>
> #!/opt/local/bin/parallel --shebang-wrap --semaphore --fg -u --id
> lock_id /bin/bash
>
> (Here is where you say 'Doh').
>
>
> /Ole


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