linux系统调用dup,dup2,dup3_dup2 dup3接口不close-CSDN博客

网站介绍:翻译自Ubuntu下的Linux Programmer's Manual名字:dup,dup2,dup3-复制一个文件描述府。摘要:#include<unistd.h>int dup(int oldfd);int dup2(int oldfd,int newfd);#define _GNU_SOURCE /*见 feature_test_macros(7) ..._dup2 dup3接口不close