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Asked: 2026-06-17T20:37:48+00:00

I have #!/bin/sh func1() { echo This is func1 from shell script } func2()

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I have 

    #!/bin/sh

    func1()
    {
        echo "This is func1 from shell script"
    }

    func2()
    {
        echo "This is func2 from shell script"

    }

I want to call func1 and func2 from a C program. Can I do that ?

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1 Answer

  1. Editorial Team

    This is unlikely to be a good idea, but I suppose you could write something like this:

    if (! fork()) { // TODO fork can return -1 on error; should check for that
    execl("/bin/sh", "-c", ". FILE && func1", (char *)NULL);
    // TODO should check to make sure execlp successfully replaced the process
}

    where FILE is the name of the .sh file that defines func1. The above will spawn a child process, and replace that child process with an instance of Bash (or whatever your shell is) with the arguments -c (meaning “the script to run is the next argument”) and . FILE && func1 (which is the script; it means “run the commands in FILE, and if that succeeds, then run the command func1“).

    For more information:

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