linux undelete

Directory (?) [-] Purpose of this article Specific operation 1 Software Preparation 2 installation 21 operation on the hard disk 22 Creating a virtual machine and installing it 23 Booting Linux with Grub 1. The purpose of this article suitable for computers without optical drive to install Linux, there is also the feeling of installing

customers are top-notch IT companies, including the world's largest microprocessor company. November 1991, Linus Torvalds wrote a small program, named Linux, on the internet. He expressed a desire to use the "kernel" of an operating system. It was all an accident. However, on the Internet, Linux just a "Lulu", it was the vast number of cattle and gazelle followers of the plan, all the battle, helter-skelte

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 1991, Finnish college student Linus Torvalds The idea of developing a free UNIX operating system, when Linux was born, to keep the fledgling operating system from dying, Linus to publish its own work

[Linux] Linux system (process management) and linux System Process Management Process: When we run a program, Linux creates a special environment for the program, including all the resources for running the program. This environment is called a process. Foreground process: Generally, some commands belong to the for

[Linux] Linux system (login, exit, password repair), linux Password To log on to linux, enter the user name and password and press Enter. Change Password Use the passwd command to enter a new password and confirm the password. The password rules are strict. Try multiple times. Run the whoami command to view t

[Linux] Linux system (File Operations), linux System File Operations Linux has three file types: common files, directories, and device files. View files Use the ls command to get ll and view the file list. parameters:-l (list form) and-a (display hidden files) Use metacharacters *? To view the list of matched fil

First, replace the file1. Op.txt is known to exist in the/root/data, how to copy the/root/afeng/op.txt to the data directory and replace2.1[[email protected]/]# \cp/root/afeng/op.txt/root/data/2.2[[email protected] ~]#/bin/cp/root/data/op.txt/root/afeng/Second, VIM's shortcut keysG reach the bottomGG arrives on the first floorO Go to the downstream editorU undo: Wq Save and exit: q! Forced exitThird, set the alias1. Why alias is setSafety: To enter a crowbar when using dangerous commands2. The f

I would like to recommend a Linux operating system that is very useful to everyone, for example, to let everyone know about the Linux operating system, and then to give a comprehensive introduction to the Linux operating system, I hope it will be helpful for you to prepare for the publication of "Linux system architect

1, under Linux play Doom game problem solving method? To correct the sound effect output, must use 2.90 version or later sound driver; it supports the instant "Doom mode", the sound effect sample is 16bit, such as using 8bit sound card, can use some programs to let the sound appear, if the Doom movement is not smooth, the sound effect cancellation (will sndserver file renamed) There will be some improvements, doom presets that do not support music (li

Through this article, you can understand the basic concepts, history, and development of Linux and UNIX; First of all, we will briefly introduce UNIX and Linux, so that readers can compare their differences and understand why Linux is very good and the background of Linux is related; Introduction to the Operating Syst

Perface I have already written an article titled five subsystems of the embedded Linux kernel, which is more general and simple. Now I want to explain it in detail. Leave this note only for future reference and supplement! Linux Kernel Subsystem The kernel is the core of the operating system. The Linux Kernel provides many basic functions, such as virtual mem

1 files and directories of Linux Modern operating systems introduce files for long-term storage of information that can be stored independently of the process, and the logical units of the files that create information as processes can be used concurrently by multiple processes. In UNIX systems, the operating system designs a common set of APIs for I/O operations such as text and images on disk, input devices such as mouse and keyboard, and network i

Objective Only a bald head can become stronger. This semester opened the course of Linux, teaching teachers are more responsible for one. In general, it is more systematic to learn a bit of Linux ~ ~ ~This article mainly summarizes the basic operation of Linux and some simple concepts ~ If the unfamiliar classmate can play the next

2nd Chapter: Installation Guide 2.1 Pre-Installation Preparation 1, collecting system data: In order to be able to successfully install and set up the Linux system, you must put the following information for the installation of the system to use: HDD: Quantity, capacity and type; Memory: The amount of memory installed on your computer; CD-ROM: interface type (IDE, SCSI); SCSI card: The model number of the card; Network card: The model of the network

[Linux] C language Linux system programming creation process, linux 1. process ID Each process is represented by a unique identifier, namely, the process ID (pid). The system ensures that each pid is unique at a certain time. 1.1 allocate process ID By default, the kernel limits the maximum process ID to 32768. You can set/proc/sys/kernel/pid_max here. In a short

[Linux] C language Linux system programming-11 TCP communication statuses, linux-tcp Three-way handshakeThe client initiates a SYN request, and the client is in the SYN_SENT State (the first handshake)After the server receives the message, it changes from LISTEN to SYN_REVD and replies to the client. After the client receives the response, it is in the state of

[Linux] Linux commands for counting folders and files, and linux statistics # View the number of files in the current directory (excluding files in subdirectories) Ls-l | grep "^-" | wc-l # View the number of files in the current directory (including files in sub-Directories) Note: R, representing sub-Directories Ls-lR | grep "^-" | wc-l # View the number of

maintenanceBadblocksCfdiskDdE2fsckExt2edFsckFsck. minixFsconfFdformatHdparmMformatMkbootdiskMkdosfsMke2fsMkfs. ext2Mkfs. msdosMkinitrdMkisofsMkswapMpartitionSwaponSymlinksSyncMbadblocksMkfs. minixFsck. ext2FdiskLosetupMkfsSfdiskSwapoff8. Network communicationApachectlArpwatchDipGettyMingettyUuxTelnetUulogUustatPpp-offNetconfigNcHttpdIfconfigMinicomMesgDnsconfWallNetstatPingPppstatsSambaSetserialTalkTracerouteTtyNewaliasesUunameNetconfWriteStatserialEfaxPppsetupTcpdumpYtalkCuSmbdTestparmSmbclien

Linux has many advantages in function, price or performance, however, as an open operating system, it inevitably has some security problems. about how to solve these hidden dangers, to provide a safe operation platform for the application, this article will tell you some of the most basic, most commonly used, but also the most effective tricks. Linux is a UNIX-like operating system. In theory, there is no s

Four, under the Linux "God Soldier Weapon": 15 Questions What is 55.KDE and what is the characteristic? The KDE project, launched in October 1996, is designed to create a complete and easy-to-use desktop environment on the X-window. KDE now has the heavyweight software of KFM (similar to IE4.0), KPresenter (like PowerPoint), Killustrator (like CorelDRAW or Illustrator), And thoughtful user GUI configuration software can help users configure unix/