Linux cryptographic program using the termios Structure

The following is an excerpt from beginning Linux programming. # Include # Include # Include # Define password_len 8Int main (){Struct termios its, newits;Char password [password_len + 1]; Tcgetattr (fileno (stdin), & Its ); Newits = its;

Add a user through FTP in Linux

If the FTP service is not installed, install vsftpd: Yum install vsftpd first.   Add a User Username Useradd-D/home/SEA/-M Username The user's FTP root directory is/home/sea. The-M parameter allows the system to create this directory for you.  

Linux user information

Besides initProgramAll Linux programs are started by other programs or users. UID is the key to user identity, type uid_t # Include # Include Uid_t getuid (void); uid of the user who starts the program Char * getlogin (void); the login name

Main requirements for using errno in Linux

The following content is transferred from http://hi.baidu.com/tekuba/item/b247ce5a9a8653c8d2e10c51   Errno-number of last error Errno records the last error in LinuxCode. The code is an int value defined in errno. h.Pay attention to reference his

Linux port number command

In Linux, if we need to know port 2809, we can use the following command: $ Netstat-Pan | grep 2809 TCP 0 0 0.0.0.0: 2809 0.0.0.0: * Listen 9493/Java The following describes common parameters: Netstat [-A] [-B] [-E] [-N] [-O] [-P proto] [-R]

Keypad mode of Linux curses Library

# Include # Include # Include Int main (){Int key; Initscr ();Crmode ();//Keypad (stdscr, true ); Noecho ();Clear ();Mvprintw (5, 5, "key pad demonstration, press 'q' to quit ");Move (7, 5 );Refresh ();Key = getch (); While (key! = Err & Key! =

My mouth speaks for fear of my nose-the story of my colleague Linux

Your mouth speaks for fear of your nose-- The story of my colleague Linux was early in the morning. Let's look at my colleague's blog. This blog of my colleague Linux made me happy, I finally found out that he has made us depressed for many days. I

Linux programmers in China

Programmer reporter/Yan Hui Linux, in the eyes of many people, is a familiar and unfamiliar term, as if always around us, but cannot grasp its real side. In our impression, Linux is closely related to the network economy bubble. As the network

Configure 802.1x in Linux

The dormitory network adopts 802.1x authentication, and a new RedHat 9 is installed. If the network is unavailable, the 802.1X Authentication client must be installed. The school's network management system only provides Huawei's Windows client,

Codeblock installation in Linux

I'm running redhat4, which doesn't seem to be made into nightlies for a while.I Checkout the source and upgraded Autoconf stuff, as well as downloaded, configured and installed wxWidgets-2.8.4.However, when I run./Bootstrap for the codeblocks source

Linux programming tool list

Development MethodIn the Unix world, a large number of programmers develop software in the traditional non-ide mode. It is generally a combination of the following: 1. compiler: GCC, clang, etc. 2. editor: It is generally Vim/emacs3.make: GNU make

Common cross-compilation methods in Embedded Linux

To use dynamic languages in Embedded Linux, you must first solve the problem of cross-Compilation of the language interpreter or execution engine.Cross-compilation usually involves the following methods:1. Configure cross-compilation directly using

Introduction to Linux Network Programming

If you are familiar with network programming on Windows, it is very easy to transfer network programming to Linux. Because they all use socket APIs for programming. The following sample code demonstrates a simple server program. The program

Centos3 Linux server environment Configuration Optimization

Original post:Centos3 Linux server environment configuration optimization explanation Wikipedia, free encyclopedia Directory[Hide] 1 Content Overview1.1 adjustments and settings after centos3 Installation1.2 Upgrade OpenSSL and

Platform notes-QT/Embedded 3 on Linux

Problems cross-compiling QT/Embedded 3.3 for big-Endian ubuntures: When cross-compiling on a little-endian machine (e.g. x86) for a big-Endian processor (e.g. powerPC), the configure script will use the host's endianness instead of the target's.

Linux time and date

All UNIX systems, including Linux, start at midnight on January 1, January 1, 1970. All the time in Linux is measured by the number of seconds since then. Time type: time_t # Include Time_t time (time_t * tloc ); Struct TM * gmtime (const time_t *

10 tips for cainiao to learn Linux

With the expansion of Linux applications, many friends have started to access Linux. Based on their experience in learning windows, they often feel a bit confused: they do not know where to start learning. Here are some suggestions for learning

Dialog between Linux and terminal

The following content is from beginning Linux Programming /Dev/tty points to the current terminal or current login session, which can be operated like a file Code: menu1.c # Include # Include Char * menu [] = {"A-add new record ","D-delete record ","

Seven-day llvm zero-Basic (Linux Version)-seven-day

Author: snsn1984 This is the last day of this zero-basic entry, and the main task of this time is to practice a pass.Task Description: implements a pass. This pass can read and output the names of all the for loop headers in a program. At the same

Getting started with llvm in seven days (Linux Version) -- Day 1

Author: snsn1984 Opening remarks: The process of learning llvm is a long and arduous process that requires a lot of time and effort. Not only that, but the START process is not easy. A good start is half the success. I combined my learning process

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