在golang中程序退出后如何保持子进程运行？

Question

i noticed that subprocesses created using Start() will be terminated after program exit, for example:

package main

import "os/exec"

func main() {
    cmd := exec.Command("sh", "test.sh")
    cmd.Start()
}

when main() exits, test.sh will stop running

Answer 1

The subprocess should continue to run after your process ends, as long as it ends cleanly, which won't happen if you hit ^C. What you can do is intercept the signals sent to your process so you can end cleanly.

sigchan := make(chan os.Signal, 1)
signal.Notify(sigchan,
    syscall.SIGINT,
    syscall.SIGKILL,
    syscall.SIGTERM,
    syscall.SIGQUIT)
go func() {
    s := <-sigchan
    // do anything you need to end program cleanly
}()