unix error code 127

Introduction to advanced programming in Unix environment: Basic Unix knowledge (III) Some shame ~, I haven't updated it for a year and a half. I came to a new organization and made an embedded system as I expected. I thought it was okay;This time, I

1.c++ implementing the LS command#include #include#include#include"apue.h"using namespacestd;intMainintargcChar*argv[]) {DIR*DstructDirent *Dirp; if(argc!=2) {cout"Usage:ls Directory_name"Endl; Exit (-1); } if((Dp=opendir (argv[1]))==NULL)

Reprinted from Http://www.cnblogs.com/panfeng412/archive/2011/11/06/2237857.htmlRecently in the Linux environment to do C language project, because it is on the basis of an original project two development, and project engineering is huge and

Recently in the Linux environment to do C language project, because it is on the basis of an original project two development, and project engineering is huge and complex, there are many problems, the most encountered, the longest time of the

This article transferred from:http://www.cnblogs.com/panfeng412/archive/2011/11/06/segmentation-fault-in-linux.htmlRecently in the Linux environment to do C language project, because it is on the basis of an original project two development, and

Recently in the Linux environment to do C language project, because it is on the basis of an original project two development, and project engineering is huge and complex, there are many problems, the most encountered, the longest time of the

Recently encountered Os.system () execution System command, the Internet collected a bit of information, organized as follows, in case of a rainy days, but also hope to help some people.The relationship between the return value of Os.system (cmd) in

Recently in the Linux environment to do C language project, because it is on the basis of an original project two development, and project engineering is huge and complex, there are many problems, the most encountered, the longest time of the

System Functions Function: Call fork to generate a sub-process, which is called by the sub-process;/bin/sh-C command to execute the command represented by the command parameter, blocking the current process until the command is killed The execution

Install bind9 from the source code package Isc bind is the specific implementation of DNS in UNIX and Linux. BIND 9 is a new generation version that re-compiles most bind Structure Code. The main features of BIND 9 include: DNS SecurityDNSSEC