如何获得一个进程的PID在Linux下用C [英] How to get the PID of a process in Linux in C

问题描述

我需要使用kill API杀死一个过程。对于我所需要的进程的进程ID。我试图把它用：

I need to kill a process using the kill API. For that I need the process id of the process. I tried to get it using:

ret = system("pidof -s raj-srv");

，但它没有返回正确的值。我不想用这个杀死进程：

but it is not returning the correct value. I dont want to kill the process using this:

ret = system("pkill raj");

有可能被用于获取进程ID的API？

Is there any API that could be used to get the process id?

推荐答案

你得到的返回状态系统。这不是PID。你想是这样的：

You are getting the return status of system. That's not the pid. You want something like this:

char line[LEN];
FILE *cmd = popen("pidof...", "r");

fgets(line, LEN, cmd);
pid_t pid = strtoul(line, NULL, 10);

pclose(cmd);

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