Linux

passwd command The use of PASSWD commands is many, for beginners, the general is to modify or set the password, we can view its basic parameters through the passwd-h command.1[Email protected]:~#passwd-h2Usage:passwd[Options] [LOGIN]3 4

Linux common commands, will be updated gradually, I hope to be helpful to everyoneDeleteRm-f file1 Delete a file called ' File1 'RmDir dir1 Delete a directory called ' Dir1 'RM-RF Dir1 Delete a directory called ' Dir1 ' and delete its contents at

About Wpa_supplicant:Use the WPA_CLI command.Wpa_cli-iwlan0 add_network//Wlan0 is the name of the wireless network device, and adding a network will return a number, assuming 1Wpa_cli-iwlan0 set_network 1 SSID ' ... '//Here The SSID is the network

Linux Test StatementsTesting with the test command, returning 0 means that the test was successful and returning 1 indicates a failure. 1. File Status TestFile status test refers to the permissions of the file, there is no, attributes, types and

1. Yum Benefits: When installing, updating or removing software, yum can automatically resolve dependencies between software and Yum sources can be obtained by http,ftp, file2. Set YumThe Yum profile is/etc/yum.conf and the download source file is

Kickstart unattended installation of Linux1. Installation of VSFTPD, Tftp-server, Dhcp-server and KickstartYum-y install VSFTPD tftp* DHCP Kickstart2. Set VSFTPDMount Windows shared FoldersMount-t Cifs-o Username=share,password=share//192.168.20.254/

Linux under the VI command Daquancommand to enter VIVI FileName: Opens or creates a new file and places the cursor at the beginning of the firstVI +n FileName: Opens the file and places the cursor at the beginning of nthVI + FileName: Opens the file

Description of the linux/proc/cpuinfo file, proccpuinfo Processor: Number of the logic processing core in the system. For a single-core processor, the course considers it as its CPU number. For a multi-core processor, it can be a physical core, or

Installation and use of virtual machines Vmware Vmware is a virtual PC software that virtualizes a new hardware environment on an existing operating system. It is equivalent to simulating a new PC, in this way, two independent operating systems

Linux File System partition Basics A file system is a structure and algorithm used to manage devices and organize files. /Boot partition, which contains the kernel of the operating system and the files used during system startup.Zone is necessary,

Vim configuration file ~ /. Vimrc When vim is started, the. vimrc file under the root directory of the current user will be automatically read. This file can contain some settings or even scripts. "Set EncodingSet encoding = UTF-8Set fencs = UTF-8,

Turn oh-my-zsh into the real my zsh Environment: Ubuntu 32-bit Install oh-my-zsh: 1. install zsh: sudo apt-get install zsh 2. Change the current user's shell environment to zsh: chsh-s/bin/zsh. If the modification using the chsh command is

Tcp_tw_recycle check the tcp_timestamps kernel code Note: version of kernel code in this document: linux-4.0.5/*************************************** *********** Author: Samson* Date: 07/14/2015* Test platform:* Gcc (Ubuntu 4.8.2-19ubuntu1) 4.8.2*

Install OpenNebula in CentOS 6.4 Install OpenNebula in CentOS 6.4 # Install the 163 SourceHttp://mirrors.163.com/.help/CentOS6-Base-163.repo# Install the epel SourceWget http://dl.Fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpmYum

Modify grub to solve the computer startup ERROR: ERROR 17 Modify grub to solve the computer startup ERROR: ERROR 17 The original computers include C, D, E, F, and G. C drive windows system disk, and G drive with CentOS installed. Later, as needed,

How to rescue the database after a Linux system crash (no such file or directory) Environment: dell r620 ServerLinux CentOS 6.5Oracle 11.2.0.4.0 Problem description and analysis:I suddenly found that the machine could not be logged on. I felt that

Set the width of the Tab key in Linux For programmers, typographical code is often required. At this time, the Tab key is required. However, the width of the Tab key is too large, and the code may be too long to extend to the next line, at this

A Linux kernel spin lock design-A nested stack spin lock The overhead of the lock is huge, especially for multi-core and multi-core processing. Multi-processing is introduced to improve the performance of parallel processing. However, due to the

Tomcat loads application configuration file order For the three frameworks, such as ssh or ssm, what is the configuration file loading sequence when the Tomcat container is started? To solve this problem, I probably know that every project is loaded

SSH service suddenly interrupted and Handling Methods Environment: Linux CentOS 6.5 Question and Description: After receiving a task today, the lead asked why the ssh client cannot connect to the server. After going back to the test, this is true.