Linux

Download Jdk:http://Download.oracle.com/Otn-Pub/Java/Jdk/A. Installing JDK Decompression>Tar-ZXZF JDK-8u77-Linux-x64.gz Move to/Usr/Local/the following decompression: Jdk1.8.0_WuyiSoft Connect ln-S JDK1.8.0_Wuyi/The JDK is now in the following

View process Memory usage: ps-auxVSZ indicates the amount of virtual Memory unit KBRSS indicates the amount of physical memory in kilobytesAdd swap file size to 4G internal storage block per block 1MDD If=/dev/zero Of=/swap bs=1m count=4096000Create

Yum Benefits: Yum installs software that easily resolves dependency issuesExperiment: Make a yum warehouse, now has two servers CENTOS6 (abbreviated 6), CENTOS7 (abbreviated 7), I use 7 as a data source, with native or CENTOS6 access how to

file Find Description:Find eligible files on the file systemLocate: Non-real-time lookup, through the database to find, high efficiency, can be used to find more fixed filesDepending on the/var/lib/mlocate/mlocate.db database file, the files created

01. Monitoring System Resource Command = Vmstat [refresh delay Refresh]Example: Vmstat 2 3: Refresh 2 seconds, refresh 3 times02, boot-time kernel detection information = DMESG | grep CPU03. View Memory Usage status = Free-m04. View CPU Information =

DF is commonly used to view disk usage.Du is commonly used to view the size of a folder.Linux commands:DF [-ahikhtm] [directory or folder]Parameters:-H: Display the usage of 1111000KB-XXXMB in a way that is easier to recognize, by default in KB-I:

First, install Apache server1. Check if the Apache server is installed2. If the unrecognized service is indicated, the component is not installed and needs to be manually installedYum Install httpd3. Start the process after installation is complete4.

If it's a Linux system, first you need to install Zshsudo Yum Install zsh or sudo Install zshNext we need to download the OH-MY-ZSH project to help us configure zshwget Automatic Installationwget

compression, compression, and archiving toolsSome properties may be lost when compressing files, and ACL properties will be lostThe following are the tools used to compress a single fileCompress "files to compress" (the original file is deleted by

1. IntroductionAnd many yum sources automatically install GIT version 1.7, so you need to master the manual compilation and installation of the Git method.2. Install git dependency PackageYum install curl-devel expat-devel gettext-devel

1, interprocess communication (IPC) inter-process communicationA better understanding of the concept is that inter-process communication is the transmission or exchange of information between different processes.Classification of IPC mechanisms

First, the OriginUNIX to Minix to Linux 1991 official release1. Kernel version: Linux core version of Linux kernel official website www.kernel.org2. Release: such as Redhat, CentOS, SuSE, Ubuntu3. Open source software: Apache, Nginx, MySQL, php,

1. View the version of the systemUname–r2, install dependent libraries such as GitYum Install Yuminstallbzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel Tk-devel gdbm-devel db4-devel libpcap-devel xz-devel3, install the Python

Timing analysis of video learning process scheduling and process schedulingDifferent types of processes have different scheduling requirementsFirst Category:--i/o-bound:1. Frequent i/o;2. It often takes a lot of time to wait for I/O operations to

First, install Windows, from the main hard disk to separate 40G space;Second, download the Linux iOS image;Third, install the UltraISO, the download good Linux image to write to U disk;Write as write to hard disk image ' usb-hdd+ '!Four, restart the

[Shell]-Basic Knowledge (2), shell-Basic Knowledge1. Shell script Running Mode Create a Shell script file, generally ending with. sh (for example, example. sh) The Shell script runs as follows: Add 'X' execution permission (relative or absolute

Log File System, Log File Journaling file system is a file system with fault recovery capabilities. In this file system, because the update information of directories and bitmap is always written to a continuous log on the disk before the original

How to install nginx and centos7nginx in Centos7 1. Add the nginx yum Source(Installation instructions on the official website) Vi/etc/yum. repos. d/nginx. repo Add the following content to the file: [Nginx]Name = nginx repoBaseurl =

Ssh and scp key-free remote command execution: Keep CT, sshscp First install CT # Yum-y install benchmark CT Command Format #./Verify ct ip comm # verify CT is an independent tool, so sh cannot be used for execution. 123456789101112131415161

Unbuntu16.04 install sogou Pinyin input method, To make my computer relatively safer, I installed a ubuntu physical machine. I installed the sogou Input Method in unbuntu because I often enter Chinese characters. 1. Download the installation