获取程序进程（服务和守护进程）在Linux上使用C [英] Getting the Program Process (Service and Daemon) on Linux in C

问题描述

我想知道怎么一会创建一个在后台启动的应用程序。目前，我正在创造一个在C网络服务器作为一个小项目，既要学习一些旧的C和Linux Socket编程。但我目前关注的是：

• 如何获取当前进程号？

我要得到这个，因为当我启动的过程中，我要显示谁启动该服务的用户进程号。

• 我的第二个问题是，我该如何开始我的应用程序作为一个守护进程在后台运行？

我如何应该这样做的任何引用，教程和/或视频为AP preciated！

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也许我是有点不清;我想从C左右的时间内获取进程ID，我需要我的应用程序创建一个shell脚本或者我可以做到这一点从C？

解决方案

1. 要获得正在运行的进程标识，使用 GETPID（）功能。


2. 要创建一个后台程序，即在后台运行分离的进程，按照这些说明。

I'd like to know how one would create an application that starts in the background. I'm currently creating a webserver in C as a little project, both to learn some old C and Linux Socket Programming. But my current concern is:

• How do I get the current process number?

I want to get this because when I start the process, I want to display the process number for the user who starts the service.

• My second problem is, how do I start my application as a Daemon to run in the background?

Any references, tutorials and/or videos on how I'd do this is appreciated!

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Maybe I was a little bit unclear; I want to get the Process ID from within C. So, do I need to create a shell script for my application or can I do this from C?

解决方案

1. To get the running process' identifier, use the getpid() function.
2. To create a daemon, i.e. a detached process running in the background, follow these instructions.

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