[beagleboard] Re: more than one command in a script

[Brad Hopper]

Thanks Akhil, I did see the & at the end of a command in some example long 
ago, but it wasn't explained what it was, and honestly I thought it might 
be a typo :-)

I'll check it out tonight!


On Thursday, March 6, 2014 9:27:40 AM UTC-5, Akhil wrote:
>
> I think you want to run the first program that never returns as a 
> background process. Here are some links on how to do that:
> http://www.cyberciti.biz/faq/linux-command-line-run-in-background/
> http://www.thegeekstuff.com/2010/12/5-ways-to-execute-linux-command/
>
> I think just appending an ampersand " &" at the end of your command is 
> what you're looking for.
>
> Cheers,
> Akhil
>
> On Thursday, March 6, 2014 4:41:13 AM UTC+1, Brad Hopper wrote:
>>
>> Hey folks, just getting started here with BBB.
>>
>> Like many who get one of these I picked it up with a specific purpose in 
>> mind, and I want the board to start on that purpose right away... so I want 
>> to auto execute a script on startup. I'm not quite that far, and have a few 
>> tutorials to read on auto login and start. Meanwhile I'm just trying to get 
>> my script going and it won't complete because the first command starts a 
>> "service", mjpg-streamer, and hogs the shell so that the next command never 
>> starts (I want to start OctoPrint).
>>
>> Is there some secret word like spawn, exec, start, execstart etc that 
>> will allow the first command to spawn and remain running so the second 
>> command can start?
>>
>> Here's the script so far (I wish I could figure how to copy to the 
>> clipboard from vim but...):
>>
>>
>> 
>>
>> by the way, the only way I know to kill this script is to hit ctrl-C, 
>> which does kill mjpg-streamer, and then OctoPrint starts, but it complains 
>> that "daemon already running?"
>>
>> I've been Googling this for a while and so far haven't uncovered what 
>> seems like it should be simple. 
>>
>>

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[beagleboard] Re: more than one command in a script

[Akhil]

I think you want to run the first program that never returns as a 
background process. Here are some links on how to do that:
http://www.cyberciti.biz/faq/linux-command-line-run-in-background/
http://www.thegeekstuff.com/2010/12/5-ways-to-execute-linux-command/

I think just appending an ampersand " &" at the end of your command is what 
you're looking for.

Cheers,
Akhil

On Thursday, March 6, 2014 4:41:13 AM UTC+1, Brad Hopper wrote:
>
> Hey folks, just getting started here with BBB.
>
> Like many who get one of these I picked it up with a specific purpose in 
> mind, and I want the board to start on that purpose right away... so I want 
> to auto execute a script on startup. I'm not quite that far, and have a few 
> tutorials to read on auto login and start. Meanwhile I'm just trying to get 
> my script going and it won't complete because the first command starts a 
> "service", mjpg-streamer, and hogs the shell so that the next command never 
> starts (I want to start OctoPrint).
>
> Is there some secret word like spawn, exec, start, execstart etc that will 
> allow the first command to spawn and remain running so the second command 
> can start?
>
> Here's the script so far (I wish I could figure how to copy to the 
> clipboard from vim but...):
>
>
> 
>
> by the way, the only way I know to kill this script is to hit ctrl-C, 
> which does kill mjpg-streamer, and then OctoPrint starts, but it complains 
> that "daemon already running?"
>
> I've been Googling this for a while and so far haven't uncovered what 
> seems like it should be simple. 
>
>

-- 
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