Thread: Executing a bunch of Specific commands at specified intervals.

  1. #1
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    Executing a bunch of Specific commands at specified intervals.

    Hello out there.

    I'm interested of building an app that will read from a .txt file such the below one, a list of commands (mainly bash scripts), run them at the specified intervals and get their output.

    Such a file will look like :

    Code:
    [update]
    command=./scripts/updates.sh
    interval=7
    
    [time]
    command=./scripts/time.sh
    interval=16
    Which is the best approach on such idea? Should I create a child process for every command and inside it create a timer with the specified interval or there are more efficient ways to do such a thing ?

    Any idea or suggestion is welcomed.

  2. #2

  3. #3
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    Thank you for your answer but I don't want to use crontab because I'm planning to add some more functionalities like to get the results of the scripts and send them in a proper format to server application. I prefer to do this through C.

  4. #4
    and the hat of int overfl Salem's Avatar
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    But what you posted was essentially a crontab written in another format.

    Eg
    */7 * * * * ./scripts/updates.sh
    */16 * * * * ./scripts/time.sh


    > add some more functionalities like to get the results of the scripts and send them in a proper format to server application
    So
    */7 * * * * ./scripts/updates.sh && sendResultsToServer
    */16 * * * * ./scripts/time.sh && sendResultsToServer


    Since you're just a bash'er, you can always wrap updates.sh in updateAndSend.sh to combine the 'updates.sh' with whatever processing you need to send to your server.

    > Any idea or suggestion is welcomed.
    ...
    > I prefer to do this through C.
    You seem to be trying really hard to justify re-inventing the wheel.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

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