Linux

1 Command W to view the system load:user-logged in User nametty-system-assigned terminal number after loginfrom-remote host name, where to log in fromlogin-when to log inHow long the idle-is idle, indicating when the user is idle. This is a timer

1 Monitoring IO PerformanceNload-xThe%util key number is too large to indicate poor IO performance, which may be disk aging, or the disk itself fails.The Iotop command is also dynamically displayed, similar to top, to see how fast the disk reads and

A command that executes a task at some point in the future has at, batchThe command to run a task periodically is crontabThe execution results of these commands are sent to the user by mailSmtpThis protocol can only send mailPOP3 or IMAP4Is the

9.4 sed (UP)Sed tool example sed-n ' 5 ' p test.txt sed-n ' 1,5 ' p test.txt sed-n ' 1,$ ' P test.txt sed-n '/root/' P test.txt sed -N '/^1/' P test.txt sed-n ' in$ ' P test.txt sed-n '/R. o/' P test.txt sed-n ' oo* ' P test.txt sed-e ' 1 ' p-e '/111

8.6 Pipe symbol and job controlcat 1.txt |wc -l;cat 1.txt |grep ‘aaa‘ctrl+z 暂停一个任务jobs 查看后台的任务bg[id] 把任务调到后台fg[id] 把任务调到前台命令后面加 & 直接丢到后台8.7 The shell variableThe path,home,pwd,lognameenv command set command has many more variables, and includes user-

1. Installation processCd/tmpgit clone https://github.com/andreafrancia/trash-cliCD TRASH-CLIsudo python setup.py install2. InspectionAfter the installation is complete, we have the following tools in our system? ~ Ll/usr/bin/|grep Trash-rwxr-xr-x 1

The origin of the UNIX directory structureLinux Start-up processLinux Boot Process InsiderEmbedded system Boot Loader Technology Insider1. Simple

We do not use the offline installation methodThe first step , You must verify the Java environmentThe second step , we use the Yum command to install online, start with the service command1, Wget-o/etc/yum.repos.d/jenkins.repo

I have been asked about my study, asked if I have found the ideal research environment. I always get some small animals, or it's the fun stuff. Really ashamed, because I have always felt that I have no say, has always felt that it was wrong. But the

Ext.: https://jingyan.baidu.com/article/25648fc18f22b29191fd0011.htmlYou can see the original picture without seeing it clearlyLVM is the short name of the Logical Disk volume management (Logical Volume Manager), which is a mechanism for managing

First of all, the document that is hanging horse.Trojan files are generally disguised as normal files, or non-executable files, to achieve the purpose of deception.For example, disguised as icon file.Find a disguised file, open with the editor, you

One, find command findExact lookups, which are searched according to the conditions or combination conditions provided, traverse all files, and are therefore slower.Grammar:Find Directory Condition actionThe default directory is the current

Learning the Linux system Driver development has been a large half a year, the mind has been a doubt: that is, such as open, write, read and other system calls is how andis the kernel or the underlying driver connected? Today, we summarize some of

　　Today to use Python to write a port detection applet to detect some specific service port is not occupied, suddenly found that they do not know how to query the Linux port is occupied, God, quickly learn.How Linux looks at ports1, Lsof-i: Port

Ubuntu sogou Pinyin input method cannot be switched. How can this problem be solved ?, Ubuntu PinYin Input Method Ubuntu 17.10 input-method issue solved. @ 20180301.Issue After the sogou Chinese Input Method is installed in ubuntu 17.10, the

Extract command details. Extract details. Detailed description of tar compression and decompression commands in LinuxTar -C: Create a compressed file-X: Extract-T: View content-R: append an object to the end of the compressed archive object-U:

In ubuntu, how does one switch between the graphic interface and text interface ?, Ubuntu Gui The Linux system runs on a specified running level at any time, and different running-level programs and services are different. The work to be done and

How does Centos update the system? How to update patches in Linux ?, Windows automatic update is known or used by everyone, so it is also used as a linux System in the server camp. In Linux, how does one update software patches? zookeeper uses the

Linux rmdir command Delete files and directories on the Linux Command Line. We have discussed the use of the rm command. However, there is another related command line tool dedicated to directory deletion. This tool is rmdir. In this tutorial, we

Kubernetes 1.9 clusters use traefik to publish services This section describes how to use traefik to publish services in the kubernetes 1.5.2 cluster environment. Traefik is deployed in the daemonset mode. The http protocol is used to connect to the