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Editorial Team
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Asked: 2026-05-25T22:30:43+00:00

An existing command-line program generates some output when called with some parameters, and then

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An existing command-line program generates some output when called with some parameters, and then exits.

I would like to modify this program to run on an event loop, and listen through a public API (could be in same machine). There seem to be multiple ways of implementing this:

  • make the API external to the program and do system calls
  • turn the program into a library, and include the necessary functionality into the API itself
  • local sockets (like a TCP line server, for eg.)
  • HTTP server (producing JSON, XML, etc)

Considering efficiency under load, concurrency and scalability, what would be the best approach?

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  1. Editorial Team

    Api-design also depends on the clients, maybe you can give some more information:

    • kind of client (real user, technical client polling things, etc.)
    • trust-level of clients (open to anyone, closed set of clients to be authenticated)

    Regarding scalability requirements:

    • how many users
    • expected load (peak + average)

    Another idea could be a simple ssh-server so anyone can execute the script from outside:

    $ ssh user@yourhost.com yourCLIProgram.sh -param1 value1 -param2 value2

    Then you don’t need a overhead of event-listening loop.

    What does the program do in more detail?

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