Linux

>>1. Create a new user group, Shengchan,caiwu,jishu2. New user requirements are as follows:* Tom is an additional user of the Shengchan group* Harry is an additional user of the Caiwu group* Leo is an additional user of the Jishu group* Create a new

The ncurses library is a library of functions for graphics support under a Linux system, a character terminal processing library, including panels and menus.Today, when installing the ncurses library, we encountered some problems, which are as

Types of File systemsBrother Lian Introduction-linux has four basic file system types: Normal files, directory files, connection files, and special files, which can be identified by the file command.Ordinary files: such as text files, C language

Reference: https://blog.gesha.net/archives/406/The example in the diagram is typical: Most Linux systems will find that free (the rest) has little memory and no more programs or services. The correct explanation for the above scenario is that Linux

Ubuntu is so damn unstable, it's a piece of crap.CentOS, Ubuntu, Debian three Linux comparison and similaritieshttp://blog.csdn.net/educast/article/details/38315433/1.FreeBSD , OpenBSD, Pcbsd, Mac OS (where Mac OS is the most stable) ... The BSD

UC/OS-II: Preemptive kernel, supports only the bitmap scheduling algorithm, supports up to 65 task threads, and provides a more complete thread synchronization service.Open source but not free, users who need to develop commercial products need to

How to look at network traffic under Linux?Under Windows, we can easily view network traffic through 360来 and know which process consumes more network bandwidth. It is very important for the Web server to see how the traffic is in Linux.The

The PWD command of Linux is also a very common command, this article describes the use of the PWD command in Linux. For more information on Linux commands, see: Linux Command Quick check manual The Linux pwd command is used to display the

each file and directory in a Linux system has access permissions, which are used to determine who can access and manipulate files and directories. access to a file or directory is divided into read-only, write-only, and executable three types. As an

From the accidentally climax of ' blogEgg ache, write a bit, Medusa crack up still relatively fast, first we see Help[Email protected]:/pentest/exploits/framework3# MedusaMedusa v1.5 [http://www.foofus.net] (C) jomo-kun/foofus Networks Alert:host

If you use the Linux command line frequently, then using the history command can effectively improve your efficiency. This article will introduce you to the 15 usages of the history command in the form of an instance. displaying

Note: This article is a lot of blog learning and summary, there may be an understanding error. Please take a skeptical look at the same time if there are mistakes to be pointed out. What is the difference between synchronous IO and asynchronous Io,

In Linux systems, there are many occasions where timestamps are used to represent time, that is, the number of days or seconds from January 1, 1970 onwards. such as the password change date and expiration date in/etc/shadow, as well as the access

IntroductionMost of the IO statistics tools under Linux, such as Iostat, Nmon, and so on, are only counted to the Per Device's read and write situations, and if you want to know how each process uses IO, it's a bit cumbersome.Iotop is a top class

Use the command most often when using arch:sudo pacman-s RubyTerminal error:Error:could not open file/var/lib/pacman/sync/apricity-core.db:unrecognized archive formatIt made me toss for a long time, and finally came to the great God to conclude

how the L Inux Install and configure Munin on the Munin is a great system monitoring tool similar to the RRD tool that provides you with a wide range of systems performance information, such as disks, networks, processes, systems, and users. These

first, what is the signalWe all know that with windows, when we can't end a program properly, we can force this process to end with the task manager, but how does it work? The same functionality is achieved on Linux by generating signals and

Configure the time synchronization server ntp on centos7 Method 1: simple, efficient, and easy to useNtpdate-u ntp. api. bzMethod 2: Time Server:1) sudo yum install ntp2) sudo nano/etc/ntp. confComment a lineRestrict default ignoreAdd a rowRestrict

Install Logwatch on Centos7 and use the msmtp mail client to send server monitoring and analysis logs ########################### # DATE 2016-07-29 # # Authur by Denilas Yeung # ########################### 1. Install msmtp Download msmtp:

Enable the webDAV module on the Apache server under CentOS6 These days, we have set up a runtime environment on CentOS6, including WebDAV. Although there are a lot of online materials, they are not very detailed (maybe because I am a newbie ),