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1.1 Package Unpack Command (TAR)Common packing commands: tar, usually with the following parameters: -C: Set parameters command for compressed files (create) -x: Extracting parameter commands for files -Z: Do you have the gzip attribute at the same

1. Review: An online host late-night continuously received alarm system disk used overrun alarm. Login host View But encountered confusion: in check disk usage df–h out of the disk usage is exactly the same as the alarm information, has been

20145239 Java Programming 10th Week study summary Textbook Learning content summary Java network programming Network programmingNetwork programming is the transfer of data between two or more than two devices, such as a computer. Network

As a dog powder .. I have been very resistant to du Niang ..... But Google is getting farther and farther away. And google.com.hk is slow as a tortoise... You can only find a solution. Google is said to have data centers in mainland China,

This reference article is mainly used for the diffusion of knowledge points in subsequent articles, in this special backup and diffusion learning Exchange.There are TCP protocols and UDP protocols in the transport layer.1.UDP IntroductionUDP is a

1.UDP Brief Introduction UDP is a transport layer protocol, and TCP protocol is in a hierarchy, but unlike the TCP protocol, UDP protocol does not provide timeout retransmission, error retransmission and other functions, that is, it is unreliable

The problem of getting the Internet IP address of the local machine is the same as that in the previous post. Various methods to obtain the local Internet ip address, a variety of return: 1. Most of them are caused by ipv6. However, the computer

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8.1 count disk usage 1. Disk Space is a limited resource. 2 df and du are important commands used in Linux to measure disk usage. df is short for disk free and du is short for disk usage. 3. Find the disk space occupied by a file (or multiple files):

Use GeoIP2 to analyze visitors' IP addresses to obtain geographical location information. Link: http://blog.csdn.net/johnnycode/article/details/42028841 MaxMind GeoIP2 is widely used to identify locations and other features of Internet users, this