Installation Telnet in ubuntu Server

Telnet is a network protocol that allows a user on one computer to log onto another computer that is part of the same network.

Step1:  Login to you ubuntu server as admin and run command 
             
              sudo apt-get install telnetd


Step2:  Restart inetd service

                

            sudo /etc/init.d/openbsd-inetd  restart

Step 3: now  you  shoud  connect to telnet  server  from 

      any  other  computer machine. run command 

     telnet ip-telnet-server

មេកានិច​ ភាគទី១ ឈុន សេងណាំ

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Mechanical engineering is the discipline that applies the principles of engineering, physics, and materials science for the design, analysis, manufacturing, and maintenance of mechanical systems. It is the branch of engineering that involves the design, production, and operation of machinery.

International Mathematic 2

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The International Mathematical Olympiad (IMO) is an annual six-problem, 42-point mathematical olympiad for pre-collegiate students and is the oldest of the International Science Olympiads. The first IMO was held in Romania in 1959. It has since been held annually, except in 1980

An Introduction to Wavelets Through Linear Algebra

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Linear algebra is the branch of mathematics concerning vector spaces and linear mappings between such spaces. It includes the study of lines, planes, and subspaces, but is also concerned with properties common to all vector spaces.

Install Atom in Ubuntu via PPA

1. What is atom ?
   
 Atom is an open source "hackable text editor for the 21st Century" developed by GitHub




Step 1: You can add a PPA location with the command



     sudo add-apt-repository ppa:webupd8team/atom 

Step 2: you should tell your system to pull down the latest

       list of software from each archive it knows about, 

       including the PPA you just added:
     

     sudo apt-get update

Step3: Now you're ready to start installing software from 

       the PPA!
    

   sudo apt-get install atom

Done now you can using Atom. KhmerCourse 

International Mathematic 1

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The International Mathematical Olympiad (IMO) is an annual six-problem, 42-point mathematical olympiad for pre-collegiate students and is the oldest of the International Science Olympiads. The first IMO was held in Romania in 1959. It has since been held annually, except in 1980

International Mathematic 11

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The International Mathematical Olympiad (IMO) is an annual six-problem, 42-point mathematical olympiad for pre-collegiate students and is the oldest of the International Science Olympiads. The first IMO was held in Romania in 1959. It has since been held annually, except in 1980

How To Install Linux, Apache, MySQL, PHP in ubuntu 14.04

Step One—Install Apache

        Apache is a free open source software which runs over 50% of the world’s  web servers.
         To install apache, open terminal and type in these commands:
              

                sudo apt-get update
          sudo apt-get install apache2

Step Two—Install MySQL

MySQL is a powerful database management system used for organizing and retrieving data

To install MySQL, open terminal and type in these commands:

   sudo apt-get install mysql-server libapache2-mod-auth-mysql php5-mysql

Step Three—Install PHP

PHP is an open source web scripting language that is widely use to build dynamic webpages.

To install PHP, open terminal and type in this command.

  sudo apt-get install php5 libapache2-mod-php5 php5-mcrypt

103 Geometry Selected Exercise

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A major contributor to the field of geometry was Euclid - 325 BC who is typically known as the Father of Geometry and is famous for his works called The Elements. As one progresses through the grades, Euclidian geometry (Plane Geometry) is a big part of what is studied. However, non-Eucledian geometry will become a focus in the later grades and college math.

Simply put, geometry is the study of the size, shape and position of 2 dimensional shapes and 3 dimensional figures.

GUI tools that can make life much easier for a Linux administrator

In the recent times, many organizations have migrated from Windows, where everything is regulated with a point-and-click GUI. Thankfully, Linux has plenty of GUI tools that can help you keep away from the command line. Linux-based security tools and distributions can be used for penetration testing, reverse engineering, forensics and so on.

Here’s a look at some of the good  GUI tools that can make your Linux sysadmin tasks simpler.
 1. MySQL Workbench 

               MySQL Workbench is a visual database design tool that integrates SQLdevelopment, administration, database design, creation and maintenance into a single integrated development environment for the MySQL database system. MySQL Workbench is one of the best tools for working with MySQL databases. Besides managing databases, it also helps you design, develop, and administer MySQL databases. There is a new addition to the MySQL Workbench set of tools, which is the ability to easily migrate Microsoft Access, Microsoft SQL Server, PostgreSQL, Sybase ASE, and other RDBMS tables, objects, and data to MySQL, that alone makes MySQL Workbench worth using.

 

2. cPanel

      cPanel is a Linux based web hosting control panel that provides a GUI and automation tools designed to simplify the process of hosting a web site. It allows you to configure sites, customers’ sites and services, and a lot more. You can also use this tool to configure/manage mail, apps, security, files, domains, apps, databases, logs and many more. However, the only flipside is that cPanel is not available for free. You need to pay to use cPanel.

 

3. Shorewall

       Shorewall is an open source firewall tool for Linux that builds upon the Netfilter (iptables/ipchains) system built into the Linux kernel, making it easier to manage more complex configuration schemes by providing a higher level of abstraction for describing rules using text files. Shorewall is one of the best tops for the server. This security GUI allows you to configure gateways, traffic controlling, VPNs, blacklisting, and much more.

4. Apache Directory
       Apache Directory is an open source project of the Apache Software Foundation. Though it is designed particularly for Apache Directory Server, it is the only solid GUI tool for managing any LDAP server. It is an Eclipse RCP application and can serve as your LDAP browser, ApacheDS configuration editor, schema editor, ACI editor, LDIF editor and more. The app also contains the latest ApacheDS, which means you can use it to create a DS server in no time.

5. YaST (Yet another Setup Tool) 

       YaST (Yet another Setup Tool) is a Linux operating system setup and configuration tool for enterprise-grade SUSE and openSUSE. With this all easy-to-use, attractive GUI, you can configure network, hardware, services and tune system security. By default, YaST is installed in all SUSE and openSUSE platforms.

How to install git in ubuntu 14.04 with latest version

1. Use the PPA from the maintainers of git on Ubuntu:
 

• sudo apt-add-repository ppa:git-core/ppa

• sudo apt-get update

• sudo apt-get install git