Linux

When to use:We need to build a software project in the process of testing, in order to avoid repetitive manual downloads and decompression operations, we need to build a test environment that can be built automatically, and when the code is updated,

View Swap Occupation ScriptsFor I in $ (cd/proc;ls | grep "^[0-9]" | awk ' $0>100 '); Do awk '/swap:/{a=a+$2}end{print ' "$i" ', a/1024 "M"} '/proc/$i/smaps;done| Sort-k2nrWhy is there a swap partition, and what does the swap partition do?In fact,

Basic Daily CommandsInit 3 (Go to command line page)Steup (set up network)PWD (view your current directory)Date (view current system time)Example: (date +%y-%m-%d) Displays the current system time in the format of month and day, and (date-s "2018-02-

In the previous section, the C language was used to understand the processing of the signal, so how is it understood in bash?First, let's meet the trap command.#type trapO_o was originally a shell built-in command, can you think of why it is

Awk:awk Syntax: awk mode {action}Patterns: Regular, relational expressions, patterns, begin,end,Action: consists of commands, functions, and expressions.Text Source file Scores.txtHow to execute awk:1. Execute under command line2. Execute awk script

Linux cluster Architecture Cluster introduction keepalived Introduction Configuring High Availability with keepalived Introduction to load Balancing clusters LVS Introduction The debugging algorithm of LVS LVS NAT

How to upgrade GCC to 6.3.0 on CentOS, centos6.3.0 Virtual Machine Environment Information: [Root @ localhost/] # cat/etc/redhat-release CentOS Linux release 7.3.1611 (Core) [Root @ localhost/] # cat/proc/version Linux version 3.10.0-514. el7.x86 _

In ubuntu15, tomcat is automatically started upon startup and ubuntu15tomcat is started upon startup. Prerequisites: tomcat and jdk have been installed in the system. I have installed tomcat 9 :? /Data/server/tomcat/apache-tomcat-9.0.5 Jdk 1.8 is

Detailed explanation of the use of music commands for linux basic commands and the use of linuxmv commands Mv (option) (parameter) cut, or move and rename in the same directory 1. If the target file is a folder, the source file is directly moved

Basic Shell parsing and basic linuxshell parsing in LinuxShell basics 1. Shell Overview 1. Shell IntroductionShell is a command line interpreter that provides users with an interface system-level program that sends requests to the Linux kernel to

Notes for common Linux knowledge points and notes for linux 1. ps-ef | grep mysql query whether the mysql service exists 2. sudo/etc/init. d/mysql. server-P 3306 start the mysql service on the beta machine, if the PID file exists is started. Delete

Common commands in linux The full name of Common commands in linux. Su: Swith user? Switch to the root user Cat: Concatenate? Series Uname: Unix name? System name Df: Disk free? Spare Hard Disk Du: Disk usage hard Disk usage Chown: Change

Use extundelete in Linux to restore accidentally deleted files When data in a partition is deleted by mistake, the first thing to do is to immediately unmount the partition where the deleted file is located, or re-mount the partition in read-only

Linux User Creation and permission-related operation demonstration, linux operation demonstrationBasic command operations The procedure is as follows: Groupadd testgroupuseradd-d/usr/test-g testgroup-m testuserpasswd testuser # query user group #

Tomcat installation tutorial in Linux environment, linuxtomcat 1. Install JDK 2, upload pressure tomcat shrink package apache-tomcat-7.0.85.tar.gz to linux Enable FTP service 3. Unzip the installation package to the/usr/share directory. [Root

Centos7 zabbix-agent installation tutorial, Disable SELinux sed -i "s/SELINUX=enforcing/SELINUX=disabled/" /etc/selinux/configsetenforce 0 Firewall settings allow port 10050 of zabbix-agent to pass firewall-cmd --permanent

Error: Cannot retrieve metalink for repository: epel. Please verify its path and try again Error solution, metalinkepel rpm -ivh http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch. Rpm installed with epel Source Howeveryum -Y

Basic tcp and udp protocols for Linux socket network programming, socketudp Socket TCP network communication programming First, the server must make the following preparations: (1) Call the socket () function. Create a socket object and specify the

Install Ubuntu Server 16.04 and use two hard disks as RAID 1. In order to centrally manage project data, the company required to build a file Server. After multiple attempts, we finally completed the setup. Here, we will share the installation

Tomcat redirection using UrlRewriteFilter By default, domain names without www in Tomcat do not jump to domain names with www, and cannot be implemented by configuring. htaccess Like Apache. If you want to redirect a domain name without "www" to a