Linux

File Management file Management class commands ls， 查看：cat，more，less，tail，head，tac 复制：cp 移动：mv 删除：rm 创建：touch 元数据属性：stat 查看内容类型：file 文本编辑器：nano，viFile types for Linux 普通文件：-，f 目录文件：路径映射d 链接文件（符号链接）：软连接l 设备文件：

There are too many related commands in Linux, and there are many different options for using each command, just to introduce the simplest and most basic usage, and actually encounter problems to find specific uses.1.cdSwitch directories such as

DF: English name disk free, check the use of the hard disk. Du: English name disk usage, view the file size of the specified directory.1. Command formatdf[选项][文件]du[选项][文件]2. DF Common Options"df -a" 全部文件系统列表。"df -h" 人性化显示文件大小，如100K212G等。"df

Common explanations of process management under Linux1.init: The process number is 1, which is the main process for all processes2.ps command: View process status command, static process stateA: All terminal-related processesU: Details displayed by

Liu Forest Original works reproduced please indicate the source"Linux kernel Analysis" MOOC courseBlog DirectoryThe first week: how Computers workSecond week: Complete a simple time slice rotation multi-channel program kernel codeThird week: Linux

1. The Library file on window is a. dll format, and the library file on Linux is. So2. Computer architecturecomputer Underlying hardware resources : is completely independent, used to perform operations on the upper datakernel kernel: as a middle

Final summary of the Linux kernel analysis20135313 Wu Ziyi. Beijing Institute of Electronic TechnologyChapter1 to the past period blog portal(1) How the computer works:Linux kernel Analysis-the first week of study notes (2) How the operating system

System InformationThe processor architecture of the Arch Display machine (1)UNAME-M Display the processor architecture of the machine (2)Uname-r displaying the kernel version in useDMIDECODE-Q Display hardware system

Linux file Types      Common Files: - , f     directory file  :  d   (path mapping)      link file: l   (symbolic Link)      device file:          character device:c         block file:b      command Pipeline:p     Socket file: S    linux file

In the development, often need to ssh from one host to another host, each time need to lose login/password, very cumbersome.Use the key to log in, you can not enter the user name and passwordImplementing a password- free login from host A to Host B

Lynis Security vulnerability Detection Tool https://cisofy.com/download/lynis/https://cisofy.com/files/lynis-2.2.0.tar.gzCommand: sudo./lynis--check-all-qsudo grep warning/var/log/lynis.logsudo grep suggestion/var/log/lynis.logsudo vi/etc/cron.daily/

Introduction to CDNCDN (Content Delivery Network)Content distribution network: All clients can get the closest resources from their ownDNS split parsing featureResolve the same host name to a different IP address, depending on the client source

I. Overview of the theoryHA is highly available, also known as dual-machine hot standby.High Availability principle: Two machines A and B, normal a service, B idle, when a down or service outage, switch to B to continue to provide services, use

1.pwd View the current folder2.CD switch Directory CD/switch root directory CD. Back to the top level3.CP replication4.ls view files Under current directory-l-h-A5.vim.test Creating a hidden file6.vim Edit file Vim (file name)7.cat Viewing file

RPM Package ManagementRpmfunction: Manage rpm package safety loading and unloadingGrammar : rpm [ options ] package nameMounting discsMount:mount Point/nt does not exist[Email protected] ~]# mount/dev/sr0/mntMount:block Device/dev/sr0 is

has been installed on the virtual machine Linux operating system, installed on the server is very few, also did not encounter the driver, such as what the RAID card driver, network card driver and other abnormal situation occurred.This time the

At the beginning of the year, passed the RHCE examination, the only experience is through the system of learning, the knowledge of the Linux system a comb, found that the RHCE exam can only solve the basic system maintenance, relative to the deeper

Premise:1, a host of Linux (Redhat Enterprise linux 5.9);2, the host provides a piece of additional hard disk as the new system storage disk (IDE interface);3, the Linux kernel source code (linux-2.6.18) and BusyBox source code (busybox-1.20.2). 4.

Rights Management owner,group，other 属主，属组，其他Permissions: read write execute r w x 用户的不拥有某位权限，则使用-占位 r-x：读和执行的权限 r--：只读权限 rw-：读写权限 使用8位数来表示 r：4 w：2 x：1File: r：可以使用内容查看类的命令来显示其相关内容 w: 可以使用编辑器修改其内容

The Smaba service is similar to the use of sharing between network Places in Windows, when setting up shared resources on Windows, if Linux is required to install the Samba client package for clients, Linux can be accessed directly by Windows when