如何在 Ruby 中触发 shell 脚本并在后台(异步)运行? [英] How can I trigger a shell script and run in background (async) in Ruby?

问题描述

我有一个名为 test.sh 的 shell 脚本.如何从 Ruby 触发 test.sh?

I have a shell script named test.sh. How can I trigger the test.sh from Ruby?

我希望 test.sh 作为后台进程运行，这在 Ruby 中意味着它是一个异步调用.

I want test.sh to run as a background process, what means in Ruby it is a ansync call.

STDERR 和 STDOUT 也需要写入特定文件.

STDERR and STDOUT also need to be written to a specific file.

有什么想法吗?

推荐答案

@TanzeebKhalili 的回答有效，但您可能会考虑 Kernel.spawn()，它不等待进程返回:

@TanzeebKhalili's answer works, but you might consider Kernel.spawn(), which doesn't wait for the process to return:

pid = spawn("./test.sh")
Process.detach(pid)

注意，根据文档，无论是使用spawn()还是手动fork()和system()，都应该在退出之前获取 PID 和 Process.detach() 或 Process.wait().

Note that, according to the documentation, whether you use spawn() or manually fork() and system(), you should grab the PID and either Process.detach() or Process.wait() before exiting.

关于重定向标准错误和输出，使用 spawn() 很容易:

Regarding redirecting standard error and output, that's easy with spawn():

pid = spawn("./test.sh", :out => "test.out", :err => "test.err")
Process.detach(pid)

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