Linux Regular expressions

Regular Expressions (Regular expression) are a standard for string processing, and for system administrators, regular is a compulsory skill. For example: The system generates too much data, as a system administrator to see so much information every

Deep understanding of the fork function of Linux

First, the problem introducedDuring work, a system designer throws the following question, the following code, outputs several "-"? :/****************************************************************************** Copyright by Thomas Hu, all rights

Linux Learning Notes (iv) Managing user accounts for account management

1. Manage user accounts: Every user logging into the Linux operating system should have their corresponding registered accounts, which record the user's information, such as user name, login password, the location of the user directory, the shell

Linux Terminal character color settings

When we write the program, we usually need the terminal to display the output of red or green color, so that the user can be more clearly prompt. Here is how the Linux system terminal colors are set:The character color of terminal is controlled by

Linux CPU Load

yesterday, we looked at Nagios alert information and found that one of the servers was overloaded and the machine was a centos system. The information is as follows: 2011-2-15 (Tuesday) 17:50 Warning-load average:9.73, 10.67, 10.49

Linux Rename Commands

Reprint: http://blog.csdn.net/sea_shore/article/details/61024371.rename Command Batch modified file name, in fact, Linux can use other methods to batch change the file name, but rename is too convenientFor example, change all the tables to cdb1_* to

Create a trace of the process through the fork function to analyze the creation of the Linux kernel process

Kuregaku Shandong Normal University"Linux kernel Analysis" MOOC course http://mooc.study.163.com/course/USTC-1000029000First, the experimental process1. Open GdB and set breakpoints2. Trace to the Do_fork place3. Trace to the Copy_process breakpoint.

Linux Find directory or file details

Find directory: Find/(Look in)-name ' find keyword '-type dFind files: Find/(Look in)-name look up keywords-printIf you need further information, you can refer to the Linux command in detail.Here are some excerpts:find Path-option [-print] [-exec-ok

Linux chgrp command "reprint"

In the LUnix system, the control of the permissions of a file or directory is managed by the owner and the group being sued. You can use the CHGRP command to change the file and directory to belong to the group, this way with the group name or group

The ln command-linux command five-minute series 18

This original article belongs to "Linux greenhouse" blog, the blog address is http://roclinux.cn. The author of the article is rocrocket.In order to prevent the vicious reproduction of some websites, special in each article before adding this

snmpd.conf configuration under Linux

The predecessor of SNMP (Simple network Management Protocol), the simplest web management protocol, is the simple Gateway Monitoring Protocol (SGMP), which is used to manage communication lines. In Rhel, the configuration file address for SNMP

Linux Basic command One (file management)

1.uname: View version information1.01.12.pwd: Displays the current directory (print working directory)3.CD: Switching/changing directory (change directory)3.0 CD [Relative path or absolute path]3.1 [.] Represents this Layer directory3.2 [..]

How to implement USB Mass Storage drive under Linux

How to implement USB Mass Storage drive under LinuxVersion:v0.7How to Write Linux USB MSC (Mass Storage Class) Drivercrifan Li SummaryThis paper mainly introduces the relationship between the various protocols of USB Mass storage, and how to

Implementation of Linux USB Mass Storage Drive

How to implement USB Mass Storage drive under LinuxVersion:v0.7How to Write Linux USB MSC (Mass Storage Class) Drivercrifan Li SummaryThis paper mainly introduces the relationship between the various protocols of USB Mass storage, and how to

A full-process record of the fall of Linux server into broiler

A full-process record of the fall of Linux server into broiler A full-process record of the fall of Linux server into broiler From the collapse of the firewall. Ways to find the whereabouts of a hacker Analysis of the

Linux How to implement boot start program detailed

Linux boot Start program detailedWe assume that you are already familiar with the boot process of other operating systems, and understand the self-test boot steps of the hardware, starting with the boot loader for the Linux operating system (usually

sudo apt-get command Daquan for Linux systems

Use of APT (Ubuntu Linux package management tool one)Apt-cache Search #------(Package Finder)Apt-cache Show #------(package gets information about packages, such as description, size, version, etc.)sudo apt-get Install #------(Package installer)

Linux redirection command

standard input, output and error---------------------------------File descriptor---------------------------------Input file-standard input 0Output file-standard Output 1Error output file-standard error 2--------------------------------- 1. REDIRECT

Linux rpm Command parameter usage [introduction and application]

gpg

RPM is a "Add/Remove Program" in Windows like Redhat Package Manager (Redhat Packages management tool)RPM Execution Installation packageBinary packages (binary) and source code packages (sources) are two types. Binary packages can be installed

Linux and Windows scripting languages

This article was translated from Isystemadmin, "List of Popular Scripting Languages for Linux and Windows."A system administrator with scripting Knowledge has a distinct distinction from other system administrators. A script is an art created by a

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