Linux

The Linux user group is divided into: owner, group, other group Owner: Who created, who is the owner. Command: Ls-al Group: When creating a file or folder, this file or folder is assigned to the user group, which effectively isolates

This note is a long time after the completion of the project, sorting out the data when the accidental discovery, the operation of the Linux for the winning Kylin, the project needs to start the boot, the llinux is not familiar with, find the Linux

It is convenient to transfer files to a Linux host via FTP, but the host needs to be set up before use.The first is to configure the VSFTPD, detailed information can be seen in this blog: https://www.huzs.net/?p=1213#server_vsftpd.confHowever, when

First questionI want to create a da.txt file under the/data/da directory[Email protected] ~]# cd/data/oldboyedu-BASH:CD:/data/oldboyedu:no such file or directory1. Why this error has occurredBecause there is no such directory2. How do I resolve this

SElinux is the United States National Security Agency (NSA) implementation of mandatory access control, is the most outstanding new security subsystem in the history of Linux. The NSA is an access control system developed with the help of the Linux

The root disk is full, often caused by the. Log log, and the first thought is to look for large log files1. Find finds files larger than 800M under rootFind/-size +800m-exec ls-lh {} \;Locate the large log file that was shut down, or change to a

One, the Web server. There are lamp (LINUX + APACHE + MYSQL + PHP), accurate speaking of lamp is an architecture, APACHE is Web page, website Server software, MYSQL is database server software, PHP is interpreted language. Of course, you can also

One, view Linux server CPU detailsDetermine the Linux server CPU based on the followingCPUs with the same core ID are Hyper-threading of the same coreCPUs with the same physical ID are the same CPU-encapsulated thread or coreTo view the number of

Linux system needs regular inspection to check server hardware and software usage, the equivalent of physical examination, to ensure timely detection of problems, solve problems, reduce losses, commonly used patrol command as follows:# uname-a #

in the author's previous article on how to use the soft connection through Linux without modifying the upload code, upload the picture under the project path to the outside of the project, to prevent the re-deployment after the picture was deleted.

Study Notes for Linux _ Day3 and Study Notes _ day3 Continue to study on the third day, accumulate a little bit after work every day, always believe in accumulation.  I. File Processing commands Touch dest_file: Create a specified file in the

Modify the mail sending Address in SendMail under RHEL, rhelsendmail   In the RHEL (Oracle Linxu/CentOS) system, If sendmail is used to send mail, if there is no special setting, generally the mail address is user @ hostname, for example, hostname

Ansible (1), Ansible (I. Introduction to Ansible Ansible is a new automatic O & M tool developed based on Python. It integrates the advantages of many O & M tools (puppet, cfengine, chef, func, fabric, implements batch system configuration, batch

MongoDB replica set configuration, mongodb Replication Configuration File # Vim/etc/mongod. conf Storage: dbPath:/var/lib/mongodb journal: enabled: truesystemLog: destination: file logAppend: true path:/var/log/mongodb/mongod. lognet: port: 27017

Centos7.2 deploy saltstack and centos7.2saltstack Originally published in cu: Reference: Installation, simple configuration, and application of saltstack.I. Environment Server: CentOS Linux release 7.2.1511 (Core) Salt-master:

MySQL database full backup, mysql database 1 # function: MYSQL automatic full backup 2 # version: 1.0.0 3 # author: wangyanlin 4 # date: Latest /08/03 5 # latest 6 #! /Bin/sh 7 # create directory 8 MAIN = 'CD/& mkdir-p mysql_bak '9 MAIN1 =

Hadoop2.8 distributed cluster installation and testing, hadoop2.8 Cluster 1. hadoop2.x Overview In hadoop2, there can be multiple NameNode (currently only two are supported ). Each has the same function. One is active and the other is standby. When

Nginx file structure and parsing, for example, nginx Parsing 1. nginx file structure ... # Global block events {# events block ...} http # http block {... # http global block server # server block {... # server global block location [PATTERN] #

Change the NIC name eth0 and centoseth0 in CentOS 7. CentOS7 was installed with VBOX today, but after installation, I found no ifconfig command. I searched the internet for a solution. If the network connection is available, enter the following

Pip warning! The default format will switch to columns in the future, pipcolumns Pip warning! DEPRECATION: The default format will switch to columns in the future. you can use -- format = (legacy | columns) (or define a format = (legacy | columns)