Linux

The less tool is also a tool for paging through files or other output, which is a very powerful tool for Linux to view the contents of a file. The usage of less is more resilient than more. In more, we have no way to turn front, can only look back,

The NL command is used in a Linux system to calculate the line number of a file. NL can automatically add a line number to the output file content! The default result is a bit different from Cat-n, NL can make the line number more display design,

Directory tree structure (directory trees) 　　 File system relationship to the directory tree (Mount) 　　The so-called "mount" is the use of a directory as an entry point, the disk partition slot data placed in the directory, that is, access

Linux Core: All FilesCreate user-related files: WD saveAt the command line, type LESS/ETC/PASSWDFirst line: (each row represents a user's information to: Divide the delimiter into 7 segments)Root user, x represents a password, is a placeholder,

1, add two new disk SDB, SDC;2. Configure the first disk SDB and change its partition type;3, similarly the second disk SDC configuration, and change its partition type;4. Gradually set two disks to physical volumes, volume groups, and logical

First, what is the process?According to my understanding, the process can be understood as the image of the program . A program is a description of the instruction, the data, and its organization, and the process is the entity of the program.

This article is mainly given are some common Linux configuration, the system version is based on CentOs6.3, for their own review and the new learning, improper place also please correct me.VMware Tools Installation虚拟机--->安装vmware

1, add four new disks, and restart the virtual machine;2, view the disk information list, four disk has been added;3. Configure the first disk and configure the other three disks in the same way;4. Create the SDB1,SDC1 as a raid0 array named md0,

Learning content from the experimental building llinux tutorial, MO bored python linux tutorial1. TerminalLinux defaults to 6 pure command line Interface "Terminal" (this should be exactly 6 virtual consoles) to let the user log on, on the physical

By using SSH to connect to Linux, a process is opened, and when SSH is closed, the process shuts down, causing the process to not continue to be allowed in the Linux background, which is more cumbersome.Therefore, the use of Linux background process

I. What is a processA process is an executing program or command, each of which is a running entity, has its own address space, and consumes a certain amount of system resources. Note that processes and threads are not a concept. In the end what is

1, awk Introduction: Awk is a powerful text analysis tool, compared to grep lookup, sed editing, awk in its analysis of the data and generate reports, it is particularly powerful. To put it simply, awk reads the file line-by-row, using spaces as the

Simple optimization:1. Remove unnecessary packages (such as postfix, etc.)Yum remove-y postfixInstallation Management:1. Password1.1 At least 8 characters, case, special character and number combination, change periodically1.2 Password length can be

Linux reset root password 1. Restart the console and tap the "E" button on the boot screen to enter the kernel editing page2. Append "Rd.break" to the linux16 line and press "CTRL" and "X" Keys together3. The system's emergency help mode is now

Network FundamentalsCommon topological structureStar typeTotal LinetypeRing typeCommunication modeUnicastBroadcastingMulticastNetwork cableTwisted pair: 4 pair, 8 rootShielded twisted pair STPunshielded Twisted Pair UTPTwisted pair Line

The most contact in our life is the Windows system, compared to the Linux system, the Windows system configuration IP address is much more convenient.We all know that in a Windows system, just open "Network and Internet Settings" and select "Change

FILE:To view the type of fileDiff:Compare the contents of two different filesdiff Files 1 Files 2FIND:Find FilesFind path-name "file name"Grep:Find the appropriate file based on the contents of the file-N Displays the line number of the find content

1. Create a directory/dataMkdir/data Create data under the root directoryLs-l/data/View the data under the root directorycd/data/Switch to Data belowPWD to see which directory is currently under2. Relative path and absolute pathAbsolute path from

Windows as hub,linux as node.Two machines to install JDK1.8, download Selenium-server-standalone-3.4.0.jar1, windows down into the Elenium-server-standalone-3.4.0.jar directory, execute the following statement, the red box is the hub's registered

The general Linux system is connected before, with SSH, but the win connection to Linux is not available. SSH is unique to Linux, and win does not have this function. If win wants to remotely control Linux, the following steps:1. Ensure that win and