Linux

One, what is the system average load (load average)? In Linux systems, the uptime, W, top commands will have the system average load average output, then what is the system average load? The system average load is defined as the average process

Tape Drive Operation Command: Tar command: Use the tar command to copy a file or directory tree to a single tape. Note: Special files such as empty directories or device files cannot be copied and cannot be used to create multiple tape volumes. 1

The file can be decompressed on the Deepin command line on the Linux system, and the Deepin command line can also extract multiple tarball files at the same time. So how do Linux in the Deepin simultaneous decompression of multiple compressed files?

Autossh is an open source tool that can help manage SSH sessions, automatically connect and stop forwarding traffic. Autossh will assume that the target host has set up a password-free SSH login so that autossh can connect to the disconnected SSH

First, enhance the security Protection tool SSH is the acronym for a Secure Sockets Layer, which is a set of programs that can be safely used to replace common programs such as Rlogin, rsh, and RCP. SSH uses public key technology to encrypt

Method One The code is as follows: Root@server ~]# Rpm-qa|grep httpd Httpd-2.2.3-11.el5_2.centos.4 Httpd-manual-2.2.3-11.el5_2.centos.4 Description: Rpm–qa | The grep mysql command is for MySQL-related packages listed, my example above is the

View software XXX Installation content: Dpkg -l xxx find software in the Software Library:apt-cache search  regular expressions find software in the Software library: Aptitude search   Package find which package the file belongs to: Dpkg -s filename

Here to organize some Linux system operations related to the surface of the question, some problems have no standard answer, I hope to participate in the Linux operation and maintenance interview friends, you can first think about these problems.

Directory:First, NetFilter and iptablesSecond, filter, Nat, mangle and other rules tableThird, INPUT, forward and other rules chain and rulesFour, the Linux packet routing principleV. Iptables preparation of rulesa, NetFilter and Iptables　　(1)

Du-ah--max-depth=1 This is what I want. A indicates that all files and folders (without subdirectories) are displayed in the directory, and H represents the depth of the directory in a way that humans can understand, max-depth.The du command is used

The "preface" is explained in the blog post:This article will introduce a personal tone of the Linux Man command in the meaning of the number (including system calls and library function interpretation), at the current point in time "June 13, 2017 "

0. Preface This article summarizes how to use the echo command to write to a file, such as using the ECHO directive to overwrite the contents of a file, using the Echo directive to append content to a file, and using the Echo Directive to append

from:http://www.linuxidc.com/linux/2015-05/117414.htm [Date: 2015-05-13] Source: Linux China Linux [Font: Big Small] I've been using Linux for 10 years, and through this article I'm going to show you a series of

When working with files, you often encounter two very similar files that need to be compared and modified. Meld is a tool that specializes in this work. meld is a visual diff and merge tool. Meld is a Linux software that allows users to compare 2 to

Find related commands on Linux systems: Which viewing the location of an executable file Whereis viewing the location of a file Locate to view file locations with a database Find actual search hard disk query file name

The various tools described earlier are connected to a wireless network by cracking the password directly. Because in all devices in a wireless network environment, routers are one of the most important devices. Usually the user sets a more complex

grep sed awk is called the text-processing Three Musketeers, this article mainly about grep.Grep:global search Regular Expression and Print out of the lineThe global search is performed using regular expressions and the matching rows are

The previous article on the method of building under Windows, today write about the way to build in the Linux environment.Experiment Preparation: A Linux server.Install the JDK on the server and configure the environment variables.Configure ant on

This article mainly introduces the Inode nodes in the Linux file system, and explains in detail what the inode is, the information contained in the Inode, and the relevant data of the Inode number.First, what is the inode?To understand the inode,

Simple echo command usage and instance, echo command instance In CentOS 6.8, the flexible use of options and parameters is displayed in the form of instances, which gives you a concise understanding of echo usage. I. Syntax: echo [SHORT-OPTION]…