Linux

How can I quickly locate concurrency high because of the large disk IO overhead? There are three ways to:First: Use the CPU information in the top command to observeTop can see the CPU information is:tasks:29 Total, 1 running, sleeping, 0 stopped, 0

How to view version information under Linux, including the number of bits, version information and CPU core information, CPU specific models, etc., the entire CPU information at a glance.1.uname-a (Linux view version current operating system kernel

First, how to view the logs under Linux in real timeCat/var/log/*.logIf the log is updated, how to view tail-f in real time/var/log/messagesYou can also use watch-d-N 1 cat/var/log/messages-d means highlighting different places, and-n indicates how

Excerpt from: http://www.ha97.com/5172.htmlPS: Sometimes you find that you cannot modify a file with root permissions, most of all because you have locked the file with the chattr command. The chattr command is very useful, some of which are

Recently learning Linux, to avoid some commands to forget, so here to record:Linux file list traversalLS-A lists all the files and folders including the hiddenLs-l listing the details of the file directoryHistory View Historical CommandsCtrl+r

Fdisk Pvcreate Vgcreate Lvcreate View Display Create Delete Expansion Activated Scan Lookup Lv Lvdisplay Lvcreate Lvremove Lvextend Lvchange

Find is a very useful find tool in Linux. It can find the target file through the file path given by the user. Because it searches the entire file path in the search process to match all the target files, the search speed will be slightly slower, we

1. Create a directory/dataMkdir/dataCD/; mkdir dataCommand summary:mkdir command to create a directoryLS-L long format display-D directory displays directory or fileCD switch directory hierarchy2. Create the Aaa.txt file below/dataPwdCd/data;touch

Before using JMeter to do performance testing, basically use their own laptop.The following analysis is carried out considering the network transmission and utilization of system resources:1 on the notebook, start-cmd "ping Server" to get the

Here are the environment variables for configuring Linux: (Remember source. bash_profile). Modify the/etc/profile file (global All users)VI This file/etc/profileAt the end of the profile file, add:Export JAVA_HOME=/USR/SHARE/JDK1.6.0_20Export path= $

Source: http://silencewolf.blog.51cto.com/5009737/1720648Recently found in the work of the regular use of some repetitive commands, regular modification of some long-term, it is necessary to science and the shell Command line some common shortcut

Threading ConceptsAn execution path in a program is called a thread. A more accurate definition is that a thread is a "control sequence/sequence of instructions within a process ";There is at least one thread of execution for each process;Process VS.

Use the Mount command to hook up Windows shared folders on Ubuntusudo mount//192.168.0.1/linux/mnt/win-o username=user,password=pass dir_mode=777 file_mode=777Description192.168.0.1/linux Windows shared folder path/mnt/win mount points in Ubuntu-----

MY $ MYVIMRC, mymyvimrc Set nocompatibleSource $ VIMRUNTIME/vimrc_example.vim"Source $ VIMRUNTIME/mswin. vim"Behave mswinLet $ LANG = 'en' "set message languageSet langmenu = en "set menu's language of gvim. no space beside '=' "Syntax

Linux Command Line test network speed In many cases, we need to test the uplink and downlink bandwidths of Linux servers. Speedtest.net may be one of the most widely used websites ".Speedtest.net provides a command line version-speedtest-cli. The

Solve the Problem of Linux & Systemd mounting and download it from linux Create the following file as root: // Etc/polkit-1/rules. d/49-nopasswd_global.rules/* Allow members of the wheel group to execute any actions * without password

Enable the English-Chinese dictionary under Linux Command Line 1. Add the following code to the system environment variable. Here I add it to/etc/profile, and then execute source/etc/profile # Jianbing.org on DNSFunction j {Dig "$ * .jianbing.org"

How to experience Unity 8 Mir on Ubuntu 16.04 Ubuntu 16.04 will not be released until next year. Now you can download the daily build version for installation. Of course, even next year, Ubuntu 16.04 is unlikely to launch the Unity 8 desktop

Install Nagios on CentOS7 and configure the plotting details Directory Before getting started System Environment Monitoring content Required software packages Important CentOS7 changes Configure the development environment

How to install the Redis server on CentOS 7 Hello everyone, the topic of this article is Redis. We will install it on CentOS 7. Compile the source code, install binary files, and create and install files. After installing its components, we will