exit code 256 in unix

1 IntroductionFor those who have never been familiar with Unix/Linux operating systems, fork is one of the most difficult concepts to understand: it executes once but returns two values. The fork function is one of the most outstanding achievements

A UNIX socket-Linux general technology-Linux programming and kernel information. For details, see the following. Ladies and gentlemen, I am new to linux programming. Now I want to write a program for inter-process communication. I want to use UNIX

Author: wildwolf Source: CCID technical community (1) understand the process structure in Linux The next process in Linux has three parts of data in the memory: "data segment", "Stack segment", and "code segment". In fact, people who have learned

1. fdisk introduction; Fdisk-Partition Table Manipulator for Linux, translated into Chinese means the disk partition table operation tool; I did not translate very well and did not read the Chinese documentation; in fact, it is actually a partition

Select is still important in socket programming, but it is not very popular for beginners of socket programming, they are just used to writing blocking programs such as connect, accept, Recv, or recvfrom (the so-called blocking method block, as the

On the first, straight hit Linux:12 asked 1. What is Linux? Linux is an exotic operating system that is born on the web, growing up on the web, and ripe for networking. In the 1991, Finnish college student Linus Torvalds The idea of developing a

First, the introductionFork is one of the most difficult concepts for anyone who has not touched the Unix/linux operating system: it executes once and returns two values. The fork function is one of the most outstanding achievements of the UNIX

Starttime=timer () ' Program Execution time detection '############################################################### ' ┌──vibo───────────────────┐ ' │vibo STUDIO Copyright │ ' └───────────────────────┘ ' Author:vibo ' Email:vibo_cn@hotmail.com '--

Pipelines and famous Pipelines In this series, the author outlines several main methods for inter-process communication in Linux. Among them, pipelines and named pipelines are one of the earliest inter-process communication mechanisms. pipelines

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