Linux

NFS is also understood as a file share for the network file system , by installing the NFS service on the server, and the client is mounting the directory on the server by hanging it locally to enable file sharing1. See if NFS is installedRpm-qa

Special permissionsSUID: When running a program, the owner of the corresponding process is the owner of the program file itself, not the starting user.SGID: When running a program, the owning group of the corresponding process is the genus of the

CPU Information1. View the number of logical CPU cores# cat /proc/cpuinfo| grep "Processor" | WC -L2. View the number of physical CPUs# Cat /proc/cpuinfo | grep "Physical ID" | Sort |uniq| WC –l3. CPU Details# Cat /proc/cpuinfo4, CPU utilization

The free command in Linux will output:TotalUsed already in useFree IdleGKFX Shared MemoryBuffersCachedThe first four items are better understood, I will know what the meaning of a look. But buffer and cached I have been not very understanding,

First install GitHub# yum Install gitWhen you are donehttps://help.github.com/articles/generating-ssh-keys/#platform-linux Official setup tutorial under this URLLet me explain my configuration.Ssh-keygen-t rsa-b 4096-c "[email protected]"Running

#!/bin/bash# the files that need to be configured for backup cp /etc/login.defs /etc/login.defs.bakcp /etc/profile /etc/ profile.bakcp /etc/pam.d/common-password /etc/pam.d/common-password.baksed -i -e  '/^ pass_max_days/' d /etc/login.defssed -i -e 

Some students reflect that the implementation of the *.run file in the Linux environment is not successful, the problem is summarized as follows:1, may be insufficient authority, this time is very good to do, give permission to:Method One: chmod +x *

Linux file LookupFindFile LookupLocateFile Lookup: Find eligible files on the file systemLocateRely on the pre-built Index library query system on the prebuilt file Index database/var/lib/mlocate/mlocate.db system automatic implementation, periodic

1. Adjust the number of system file descriptors, the default is 1024x768 #ulimit-N to view[[email protected] core]# ulimit-n1024 adjustment method: [[email protected] core]# echo ' *-nofile 65535 ' >>/etc/securi TY/LIMITS.CONF Note: After the

#!/bin/bash############################################################### file name: /var/www/ Html/ks_config/optimization.sh# version: v1.0# author: ersa ma# organization:  http://iersa.blog.51cto.com/# Created Time : 2016-11-14 22:26:08# 

Modify the Initdefault parameter in the/etc/inittab file can modify the default start graphical interface or text interface, 3 is the default to enter the text interface, 5 is the default to enter the graphical interface.Init 6Shutdown–r now

The syntax structure is as follows:1. If-then statementsIF-thenstatement if command #根据conmmand的退出状态码, select Execute statement then commandsfie.g.#! usr/bin/Bashtestuser=Richif grep $testuser/etc/passwdthen for user $testuser is:

Message Queuing - Message Queuing provides a way to send a piece of data from one process to another on this computer - each block of data is considered to have a type, and the receiver process receives a block of data that can have different type

Transferred from: http://codingstandards.iteye.com/blog/831504Description of UseThe type command is used to display the types of the specified command. The type of a command can be one of the following Alias aliases Keyword keyword,

The sort command is very useful in Linux, which sorts the files and outputs the sort results standard. The sort command can get input from either a specific file or from stdin.From: Http://man.linuxde.net/sort-----------------------------------------

Experimental Building Linux Learning    Linux User Management 1. View user who am I//who mom likeswhoami ====--------====== The first column of the input indicates the user name of the user who opened the current pseudo-terminal (to see the user

The content originates from the people's post and Telecommunications press "Linux command Application big dictionary"tell 729 commands, 1935 examplesLearn about the Linux system's reference books, desk book, encountered the command or command not

Wildcard characters for files:* Match 0 or more characters？ Match any single character is 1 characters~ Current user's home directory~username User Home Directory~+ Previous working directory[0-9] Match this range number[A-z][A-z][WXC] matches any

Chattr usage, chattr [Root @ localhost tmp] # umask0022 I. chattr usage 1. Create an empty file attrtest and delete it. A message is displayed, indicating that the file cannot be deleted because the hidden file exists. [Root @ localhost tmp] #

Rotten mud: Password-free phpmyadmin configuration for database management This document consistsIlanniwebProviding friendship sponsorship, first launchedThe world For more articles, follow my ilanniweb In fact, this article has long been intended