如何更改与stdin文件描述符关联的fd? [英] How to change the fd associated with the stdin file descriptor?

问题描述

我想将管道的写fd关联到stdout.

I want to associate pipe's write fd to the stdout.

int pfds[2];
char buf[30];

if (pipe(pfds) == -1) {
    perror("pipe");
    exit(1);
}

I want to associate pfd[1] to the stdout of the process. 

我了解，我们可以使用freopen将stdout重定向到文件.我希望得到类似的东西.

I understand, we can use freopen to redirect stdout to the file. I was hoping to get something similar to this.

推荐答案

dup2(2) 可能是最简单的方法:

dup2(2) is probably the easiest way:

dup2(pfds[1], STDOUT_FILENO);

这篇关于如何更改与stdin文件描述符关联的fd?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！