Linux

DirectoryBuilding an OA environment in LinuxThe construction of any environment is based on a clean, non-toxic,A computer or virtual machine that meets the minimum configuration.New environment, the first thing is to check the hardware environment,

Although the contact with Linux for several years, but never used the TR command before learning to find that it is actually a very simple but very useful text processing tool.First look at the man's description of it:NAME tr - translate or

What is bind?The technology of virtual multi-block network card into a network card, through the bond technology, make multiple NIC appear to be a separate Ethernet interface device and have the same IP address.Principle:The NIC works in promiscuous

1. File or Directory PropertiesThe properties of a Linux file or directory include: The file or directory's node, kind, permission mode, number of links, the user and user group to which it belongs, the time recently accessed or modified, and so on.

In Linux or Unix operating systems, the daemon (Daemon) is a special process that runs in the background, independent of the control terminal and periodically performs some sort of task or waits for certain occurrences to be handled. Because in

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

Virtualenv is one of Python's three great artifacts for creating a standalone Python virtual environment, with multiple versions of Python independent and separate from each other, with multiple versions of Python installed on a single computer

View your current directoryPwdCreate file: 1-1.txtTouch 1-1.txtGo to the ETC directory under the statistics directoryCd/etcForcibly terminates the current programCtrl + CCommon shortcut keys Keys Role Ctrl+d

Original link: http://www.cnblogs.com/gnuhpc/Full backup:Establish test paths and filesmkdir Test Touch Test/{a,b,c}Generate three files under testPerform a full backuptar -G snapshot-zcf backup_full. tar. GZ testView Tarball Contenttar ztf

A general approach to the failure of a Linux systemError Messages---> Review log files---> Analyze location problems---> Resolve issues.Reasons and solutions for the failure of Linux system to startThere are many reasons why the system cannot be

Linux installation Fonts Linux Fonts directory:/usr/share/fonts Create a new directory under fonts, for example: mkdir myfonts Place the fonts you want to install under the new directory, for example: CP

Typically, a custom path is selected by compiling the installation or binary copy of the software path, taking the Nodejs software as an example, such as:/usr/local/node6.10/bin. Command not found will be prompted at this time when running with the

#!/bin/bash#---sysinit script by Yxs---#---email: [Email protected]if[["$ (WhoAmI)"!="Root" ]]; Then Echo "Please run this script as root.">&2Exit1fi#Yumsource Configyum_config () {Yum Install wgetEpel-release-y cd/etc/Yum. repos.d/&&mkdirBak

Categories of commands:Built-in command: The command that comes with the shell program,External command: has independent executable program fileUse the type command to distinguish between a built-in command or an external commandThe composition of

Users, groups, and permissionsCategories of Linux GroupsThe user must belong to one and only one primary groupThe group name is the same as the user name and contains only one user, the private groupAdditional groups for users (supplementary group)A

a awk self-introductionawk, one of the Three Musketeers of text processing, has its name from the first letter of its founder Alfred Aho, Peter Weinberger and Brian Kernighan's surname, which is not only one of the most powerful data processing

Linux Boot SequenceMBR will load bootloader (GRUB)GRUB is the abbreviation for the Grand Unified Bootloader (Multi-os boot manager).The grub configuration file is: grub.conf configuration overrides the system kernel loadSet Grub MD5 encryption

/*** Function: Create socket specifying protocol and type at the same time* #include *family (protocol Cluster): Af_inet (IPV4 protocol) AF_INET6 (IPV6 protocol)*type (socket type): Sock_stream (streaming sockets) TCP communication usageSOCK_DGRAM

Signals provided by the Linux operating systemKill-l # View the signals provided by Linux　　" Echo AAA " 2 3 the 1(passive) The kernel detects a system event. For example, a child process exit sends a SIGCHLD signal like a parent process.Keyboard

Basic and Control PrimitivesRead/write LockSimilar to mutex, but read-write locks allow for higher parallelism. Its characteristics are: Write exclusive, read share.Read-Write lock status:A read-write lock has three states:1. Lock status in read