Linux

1. What is the SED toolSed means the stream editor, which is very common in shell scripts and makefile as filters, andis to introduce the output of the previous program into the input of SED and convert it to another format output after a series of

a , function : the grep command in a Linux system is a powerful text search tool that uses regular expressions to search for text and print matching lines . Second, usage:grep [Options] ... PATTERN [FILE] ...Find the PATTERN in each file or

How to build and use SVN server under Linux | Browse:12117 | Updated: 2013-09-18 14:28 | Tags:linux How does the SVN server build and use under Linux? When it comes to SVN servers, everyone knows how to build

You can also create colorful fonts and patterns at the command line, just add some color codes, such asEcho-e "\033[41;36m Red Bottom Green character \033[0m"Where 41 of the position represents the background, 36 of the position is the color of the

The less tool is also a tool for paging through files or other output, which is a very powerful tool for Linux Orthodox looking at file content. Less uses more flexibility than more.At more times, we have no way to the front page, can only look back,

More commands, similar to cat, the Cat command is the contents of this file from top to bottom display on the screen, more will be a page by page display user page to read, and the most basic instruction is to press the space bar on the next page,

Demand:Finds files that begin with java_opts= in the catalina.sh file in all subdirectories under the current directory, replaced byJava_opts= '-server-xms800m-xmx800m-xx:permsize=64m-xx:maxnewsize=256m-xx:maxpermsize=128m-djava.awt.headless=

Tar commandUnpacking: Tar zxvf FileName. TarPackage: Tar czvf FileName. Tar DirNameGZ commandUnzip 1:gunzip FileName. GZUnzip 2:gzip-d FileName. GZCompression: gzip FileName. tar.gz and. tgzUnzip: Tar zxvf FileName. tar.gzCompression: Tar zcvf

Introduction to the first chapterComparison between Linux and other Unix-like coresHardware dependenciesLinux versionBasic concepts of the operating systemUNIX File System OverviewUnix Kernel OverviewChapter II Memory addressingMemory

Linux kernel learning, recommended books:"Linux device Driver Development detailed second Edition", "Linux kernel design and implementation of the third edition", "Embedded Linux application Development complete manual"First: To explain the basic

First, what is the Linux kernel:The most important part of the kernel-and OS, the kernel will be loaded into RAM when the system boots, which contains many key routines to the operating system. The kernel is the most critical part of the OS, and

The kernel must implement a set of services and corresponding interfaces, and the application can use these interfaces instead of dealing directly with the hardware.The Linux kernel consists of the following 5 subsystems: Process scheduling, memory

The Linux kernel is reentrant, which means that several processes may be executing in kernel mode at the same time. (Of course, a single-processor system, at a certain time there will only be one process execution, but many will block in the kernel

1.find File Lookup instructions> Find directory parameter values, parameter values .....> Find/-name passwd//Search for NAME=PASSWD files recursively starting from the system root directoryParameters-maxdepth n Find the deepest table of

Comparison of centos, Fedora, and Ubuntu software packagesComparison of Red Hat, Fedora, and Ubuntu software packagesTask Red Hat, FedoraUbuntu basic information package suffix *. rpm *. deb software source configuration file/etc/yum.

24 Security Compliance settings for Linux machines and 24 for linux machines Work content: this is the current linux machine Security Compliance Standard of China Mobile Group. I found some time to classify it, and checked some information. What

Back up a database using systemd timerBack up a database using systemd timerGuideMajor Linux distributions use systemd instead of System V boot. systemd timer can replace most functions of crontab scheduled tasks. This article describes how to back

Install mongodb in centos 6.7 Environment Introduction System: CentOSrelease6.7 (Final) Installation Directory:/data/ Installation Process Cd/data/tools/ Wgethttp: // fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.4.9.tgz software download, this

Centos 7.1 get kernel source code In centos 7.1, the default kernel source code path is/usr/src/uname -rBut it does not contain the source code. It only contains Kconfig and Makefile.View system kernel version Uname-r // view the system kernel

Introduction to DNS principles Guide DNS is one of the core internet protocols. You need to know a little about Web browsing and programming.This article describes in detail the principle of DNS and how to use the tool software to observe its