Linux

1, Top: real-time display of the process in the system resource consumption status2. Iostat: Displays the IO load status of the system device. -X common options for displaying and IO-related extended data3, netstat: Display various network related

Control of system Services1.systemdSystem initialization program, the first process that the system starts, the PID is 12.systemctl command650) this.width=650; "src=" Https://s4.51cto.com/wyfs02/M01/9C/9E/wKioL1lzTYGDJtLKAADgtFoHNGc088.png "title="

2017/07/21Ls-l-dtouch Create file mkdir directory 1 directory 2 can create multiple directories at once echo printout content echo Context > file will input context into the file, which is a > overwrite, two > is append cat view file cat >>file>file

Today in the local simulation of the company's development environment.First, install the UBUNTU-MATE-16.04.2-DESKTOP-AMD64 system with VirtualBox.Two. Download and install the XSHELL5Three. Start the link:1. Ubuntu installed after the discovery can

syntax yum (optional) (parameter)Options-H: Displays help information;-Y: Answer "yes" to all questions;-C: Specify the configuration file;-Q: Quiet mode;-V: Verbose mode;-D: Set debug Level (0-10);-E: Set error level (0-10);-R: Sets the maximum

Linux, we often use CD, Grep,vi and other commands, and sometimes we have to find out where these commands are, how to do it?Linux has 2 commands to complete this function:which, WhereisWhich is used to view whenThe path to the command to execute

Kernel source can go to https://www.kernel.org/to download.After the download is complete, you will get *.TAR.XZ source package, first use xz-d *.tar.xz decompression, and then use TAR-XVF *.tar to unpack the kernel source code:[Email

1, this article is based on CENTOS7 system terminal settings to explain, but other versions of Linux system should be similar.2. Open terminal, ' Edit '--' profile Preference '--' colos '--Remove the ' use colors from System theme ' Front tick3,

Traverse the directory to get the entire directory footprint:uint64_t Dir_space (char *path) {int ret = 0; uint64_t space = 0; Char Cur_dir[path_max + 1] = {0}; DIR *dir = NULL; struct Dirent *ent = NULL; if (NULL = = path) {return 0;

First, the conceptNFS is the short name of the network file system. is a part of a distributed computer system that can now share and assemble remote file systems on heterogeneous networks.NFS was developed by Sun Corporation. It is now a standard

1. Download JDK and TomcatHttp://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.htmlhttp://tomcat.apache.org/download-70.cgi2. Install JDK, mkdir java under/usrCopy the JDK to the. Usr/java directory and unzip the3.

1 The entire configuration process of the NICExecute Setup Command->network configuration->device configuration->eth0 (temporarily select DHCP), and then click "OK", "save". Save&quit "and" Quit "so you exit to the command line interface.2 command

LDD [Path_to_exe]LDD obtains a dependent library of executable programs by invoking a dynamic linker, but it is not recommended to execute the industry ldd on an unknown executable program to obtain its dependent libraries, because some versions of

1. Copying foldersCopy folder/usr/t1 to/home/t2 pathCp-r/usr/t1/home/t2Direct Force OverrideCp-rf/usr/t1/home/t22. Delete a folderRm-r/USR/T1Direct Force RemovalRm-rf/usr/t13. Find the file pathFind the path to t1_1 under the test and Test1

FHS (Filesystem Hierarchy standard) defines the three-tier home directory:Root directory: related to boot system;/usr: related to software installation/execution;/VAR: Related to system operation process;1. root directory (/)All directories are

Centos user and group management and centos User Group ManagementUser and user group and permission management: 1. Basic Concepts Linux is an operating system of multi-task (multi-user) users. Each user and user group has its own ID number uid gid,

Operations on text files & user and user group management, and operations on text files Text File Operations #Input redirection Tr 'a-Z' Hello HELLO World WORLD After redirection Tr 'a-Z' HELLO WORLD #Format the input content to a file:   #Standard

Set CentOS7 network in vmware and vmwarecentos7 Network In order to be able to use XShell to manage our installed CentOS7 system, we need to first set up the CentOS7 network so that it can be connected to the Internet.1. select edit for vmware, and

SHELL script strategy (Study Notes) -- 1.4 variables (BASICS), shell -- 1.4 Directory: 1.4.1 Environment Variables 1.4.2 common variables 1.4.3 modify the lifecycle and scope of a Variable 1.4.4 get the Variable Length 1.4.5 declare Variables 1.4.6

Install VmwareTools and soudog pinyin, and vmwaretools After so many years of work, it is still so hard to install linux! The pure version of Ubuntu16.04 is installed, and 17.04 is not installed even if it is unstable, I installed and found that