linux commands for interview

Summary of Common commands in linux and summary of Common commands in linuxClear terminal screen Clear terminal screen usageClearCommand orCtrl + LCombination of shortcut keys. However, this operation does not actually clear the screen. If you scroll up, you can still see the previous output. So you can also useResetCommand to truly clear the terminal screen.De

Xin Xing sorts out common query commands in Linux, and Xin Xing sorts out linux commands. View version, operating system, or cpu Information File:/etc/issue view OS version/proc/cpuinfo view cpu Information Command: hostname to view the computer name uname to view the operating system information lspci to list all pci

Common Linux commands-file search command find, common linux commands Command name: findCommand path:/bin/findSyntax: find [search range] [matching condition]Function Description: file search ExampleFind/etc-name initFind the file init In the/etc directory-Iname is case insensitive.* Represents a wildcard? Represent

Common linux commands and linux commands 1. Network Parameter Setting command 1. ifconfig: Query and SET network card and IP network segment parameters 1.1 man manual Definition DESCRIPTION Ifconfig is used to configure the kernel-resident network interfaces. It is used at boot time to set up interfaces

Summary of Common commands in Linux (7) Security Settings and Common commands in linux Security Settings Category Command Option Annotation Security PolicySelinux Setenforce Number (0, 1) Set selinux status, 0 closed, 1 Enabled Getenforce 　

Common commands in Linux System (4) program and resource management, Common commands in linux 　Program and Resource Management Category Command Option Annotation Background Management Command + Move the task to the background Ctrl + z 　 Pa

Linux basic commands and linux commandsLs command Pwd: display the current directory touch 11.txt: Create a txt file named 11 mkdir laowang under the current directory: Create a folder named laowang ls-a-l-h in the current directory: it is equivalent to ls-alh.-a is used to display all files in the current directory, including hidden files.-l is displayed as a li

Common commands for file search in Linux and Common commands for linux File SEARCH Command: find 1. Search by file name 1.1. Search for precise files Find path-name file name 1.2. Search for a file whose file name contains a string. Find path-name * file name * 1.3. Search for files prefixed with a string. Find path-na

Linux Network-related commands and linux Network-related commands Ifconfig Ifconfig is the command to view the NIC in centos6. In centos7, you must install the net-tools package before using it?Nic configuration file:/etc/sysconfig/network-scripts/ifcfg-ens33?Command: ifconfig [root@shuai-01 ~]# ifconfigens33: flags=4

Network command: Ping (Test network connectivity)Network command: Ifconfig (view and set network card information)Note: When viewing the NIC information, enter the Ifconfig command directly.Network command: Last (lists user information for current and past logged-in systems)Network command: traceroute (shows the path and information of the packet to the target host)Network command: Netstat (display network-related information)Network command: Setup (configure the Network for permanent entry)Note

　　Linux Common Command Encyclopedia 100: 1, echo "AA" "Test.txt and Echo" BB "" test.txt//"empty the original file, and the content written to the file," "Put the content to the end of the file 2. chmod go+w-r/home/zhangy//To add Write permissions to group users and other users 3, TAR-TZVF test.tar.gz//List of archived content 4, Du-ah//view file list size 5, Du-sh//View the total size of all files 6, Echo ' 1+2 ' |bc-l//mathematical operation

the default permissions that correspond to the defaults.[[email protected] ~]# umask-su=rwx,g=rx,o=rx[[email protected] ~]# mkdir/tmp/test[[email protected] ~]# ls-ld/tmp/tes Tdrwxr-xr-x. 2 root root 4096 January 8 00:32/tmp/test[[email protected] ~]#When creating a new file, the default is no execute permission for security purposes. For example, create a new Test1.txt file under the TMP directory with the following default permissions:[Email protected] ~]# touch/tmp/test1.txt[[email protect

Tags: absolute path installation file output Reference Declaration switch Directory View extLinux common commands (Common Commands for Linux)1. Statement, this article only write based on the Bash shell commonly used commands, if you encounter the command in the course of use, may be updated, the command has been repla

The command format for Linux is generally: command [-options] [parameters], such as LS-LA/ETC, you need to note the following: 1) Individual commands are not used in this format, 2) when there are multiple options, can be written together; 3) there is a simplified option (-) and a full option, such as-a equals-all.(1) LSThe function of the LS command is to display the directory file, the original is a list,

Common linux commands in January 2018 and linux commands in January 2018 Linux commands frequently used in projects (Note: linux commands mu

Five search commands in Linux and five search commands in Linux Recently, I am studying Linux. Below are some notes. When using a computer, you often need to find files. In Linux, there are many ways to do this. The foreign websit

Network Communication commands (relatively simple ): 1. write/usr/bin/write Write [user name] Used to send information to a user, provided that the user has logged on to the server host Otherwise, there is no way to leave a message for him. Therefore, write is a real-time communication tool. End the communication with Ctrl + D E.g. write guest 2. wall [write all]/usr/bin/wall Used to broadcast information to all users Wall [message] [file name] 3. pin

Refresh a simple passwd file for linux commands and passwd for linux commands **************************************** ******************************** *************************************** Original Works are from the blog of "Deep Blue blog". You are welcome to repost them. Please indicate the source when you repost

integer.In other words, a mutex can only be used for mutually exclusive access to a resource, and it cannot implement multi-threaded mutex issues for multiple resources.The semaphore can realize multi-thread mutual exclusion and synchronization of multiple homogeneous resources.When the semaphore is a single-valued semaphore, it is also possible to complete mutually exclusive access to a resource.3. The lock and unlock of the mutex must be used by the same thread, the semaphore can be freed by

Details of Common commands on Linux servers and Common commands on linuxI. User 1. useradd is used to create an account. Useradd newname // create newnamepasswd newname // set change the password. After entering this command, you will be prompted to enter the password 2. delete a user userdel newname 3. Switch users su - youruser 4. ssh remote login ssh -l root