Starting a detached process in Linux

This is a discussion on Starting a detached process in Linux within the Linux Programming forums, part of the Platform Specific Boards category; How do I start a program as a detached process in Linux? What I mean is I would like to ...

  1. #1
    A source of questions... Benji Wiebe's Avatar
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    Starting a detached process in Linux

    How do I start a program as a detached process in Linux?
    What I mean is I would like to call a function foo("/bin/bash") and it would start bash and then promptly return, with out waiting for bash to quit.

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    Ever notice how fast Windows runs?
    Neither did I.
    Which is why I switched to Linux.

  2. #2
    Gawking at stupidity
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    You could just fork() and then call your function in the child using one of the exec() functions.
    If you understand what you're doing, you're not learning anything.

  3. #3
    A source of questions... Benji Wiebe's Avatar
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    But would that work if my program ended like this:
    Code:
    ...
    foo(argv[0]);
    return 0;
    So that my program would start up a new instance of itself and then exit, without waiting for the new process to quit.
    Ever notice how fast Windows runs?
    Neither did I.
    Which is why I switched to Linux.

  4. #4
    spurious conceit MK27's Avatar
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    Quote Originally Posted by Benji Wiebe View Post
    But would that work if my program ended like this:
    Well a sure way to find out Benji is to try it. But yes, the parent can exit before the child, and spawn other processes first.
    C programming resources:
    GNU C Function and Macro Index -- glibc reference manual
    The C Book -- nice online learner guide
    Current ISO draft standard
    CCAN -- new CPAN like open source library repository
    3 (different) GNU debugger tutorials: #1 -- #2 -- #3
    cpwiki -- our wiki on sourceforge

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