Linux

Create an account with root privileges under LinuxUseradd-u 0-o-G root-g root-d/home/user1 user1Usermod-u 0-o-G root-g Root user1Description-U 0: Specifies that the UID is specified as 0 (0) as root, and the prompt after login is # instead of $.-O:

[redhat9.0]models-3 Installation Memorandum of the MODELS-3 chapter (not to be continued ... )2010-01-26 11:32:54| Category: Models-3| Report | Font size Subscription write in front: do not know because of the version or the problem of the

(1) ManThe man command is used to obtain help information for a command or configuration file , the English original is manual, where the path is/usr/bin/man, and its syntax is:Man [command or configuration file]Note: You do not need an absolute

Many times before, Conntrack as a link tracking mechanism, if it is extensible, then it will be a very exciting thing, when you read the n multi-document code, you find that it is indeed extensible, but not excited, because you may find:1. It can

One, Linux time management basicshttp://blog.csdn.net/droidphone/article/details/7975694http://blog.csdn.net/smilingjames/article/details/6205540Linux All-time basis is based on low-level hardware, low-level hardware has GPT and CPU local timer,

Download imageAt address http://www.kali.org/downloads/, we can see that the website provides 32-bit and 64-bit ISO image files. Download the image file According to the actual situation select the version you want to download, I downloaded the

2014-12-20This article is mainly about Linux under the IC card (M1 card) wireless hack technology.Equipment: Hardware, a PC, PN532 Development Board set.Software aspect: Mfoc,mfcuk.This article uses not to MFCUK, I still give everybody popular

How to control the while loop through another event and use keystrokes to control the while loop when necessary1, set a loop flag. Loop in the main process and check the loop flag in each loop to decide whether to continue, change the flag after

Original: Linux simple client server communication model (TCP)Server side: SERVER.C#include #include#include#includestring.h>#include#include#include#include#include#includeinch.h>#defineServerPort 6080#defineMaxuser 8typedefstruct_server{intsock_fd;

Title, in terms of tools mainly include Valgrind, Mtrace, Dmalloc and Memwatch, for specific use please refer to the following connectionLinux C Memory leak Detection Tool http://blog.sina.com.cn/s/blog_4b9216f50100e6o7.htmlLinux/C + + memory leak

in the process of use, you often encounter virtual machine disk space is not enough or on demand to increase the hard disk situation. the detailed steps for adding a hard disk or adding hard disk space to Linux in VMware are as follows:First, Vmware

LDAP (Lightweight Directory Access Service), by configuring this service, we can also manage users under Linux in the form of a directory, just like ad under Windows, which is easy for us to manage. Next we will configure the OpenLDAP service. This

SendMail is one of the most widely used mail systems under Linux today, although it has some shortcomings, but there are still many companies using it. Learning about it also gives us a deeper understanding of how the messaging system works. Let's

How Linux shares the Clipboard (clipboard) with WindowsFirst say two nonsense, in fact, Linux and Windows do not need to share the Clipboard, directly in the putty, press and hold the shift+ mouse to select it.However, this method is required as a

Linux backend diagnosis and debugging technology and linux backend debugging This document is not a Linux Command usage tutorial, and does not explain its usage in all aspects. There are many Internet company projects, and the dependency between

Why is the server disk io so slow? PC users often think that "the disk is fast, so it takes 2 minutes for brother to copy a 1 GB film" The server engineer may think that "Why is the disk so slow, I/O is full in 1 Mbit/s, and his meow disk is slower

Postfix Mail Server construction, postfix Mail Server EnvironmentCentos 6.4 64-bit SystemThe service is a system account used to send and receive emails.Before configuring DNS resolution for the server, add A, MX, and TXT tags. Take hichina as an

Test the OpenVPN encrypted tunnel on a single machine and solve the problem In fact, the relationship between this article and OpenVPN is not very large, but the problems exposed during the OpenVPN test. This article contains many details about IP

Set up SVN server svn in Ubuntu 14.04 :// Set up SVN server svn in Ubuntu 14.04 :// Installation package: Sudo apt-get install subversion Then select the location where the SVN service file and configuration file are stored. I put the svn directory

Hadoop Simple API Web Application Development Recently, I wrote a Web program to call the Hadoop api. I developed the Hadoop-provided management method twice, enhancing the operability. Now we will briefly introduce the functions and methods.