E-Book: Red Hat Linux Networking and System Administration (Author: Terry Collings & Kurt Wall)

Red Hat Linux is the most popular distribution of Linux currently in use. Red HatLinux has shown itself to be a robust, reliable operating system that can run on avariety of hardware, from personal computers to large mainframes. Linux in general,and Red Hat Linux in particular, is a very powerful operating system that can be usedat the enterprise level as a full-fledged server, as well as at the workstation level fortypical user applications. For those of us dissatisfied with the reliability of other com-mercially available operating systems, Red Hat Linux is a pleasant alternative.

E-Book: Linux From Scratch (version 6.5) by Gerard Beekmans

My journey to learn and better understand Linux began over a decade ago, back in 1998. I had just installed my firstLinux distribution and had quickly become intrigued with the whole concept and philosophy behind Linux.

There are always many ways to accomplish a single task. The same can be said about Linux distributions. A greatmany have existed over the years. Some still exist, some have morphed into something else, yet others have beenrelegated to our memories. They all do things differently to suit the needs of their target audience. Because so manydifferent ways to accomplish the same end goal exist, I began to realize I no longer had to be limited by any oneimplementation. Prior to discovering Linux, we simply put up with issues in other Operating Systems as you had nochoice. It was what it was, whether you liked it or not. With Linux, the concept of choice began to emerge. If youdidn't like something, you were free, even encouraged, to change it.

Tutorial: Install TrueType Font on Ubuntu

What is TrueType Font? TrueType Font (TTF) is an outline font standard developed by Apple and Microsoft in the late 1980s as a competitor to Adobe's Type 1 fonts used in PostScript. It has becom e the most common format for fonts on both the Mac OS and Microsoft Windows operating system.

The familiar TrueType Font are Times Roman, Helvetica, Courier, etc. In Microsoft Windows operating system fonts are Times New Roman (compatible with Times Roman), Arial (compatible with Helvetica), and Courier New (compatible with Courier), etc.

By default, Ubuntu has no TrueType Font (TTF). So Ubuntu users often need TrueType Font for Open Office, Libre Office, Gimp, and another programs. This article will give you tutorial how to install TTF (TrueType Font) on Ubuntu (here I use Ubuntu 13.10). So check this out.

Convert .nrg to .iso in Ubuntu / Debian

How to convert file .nrg to .iso? In linux family, to convert file .nrg to .iso is not big problem. And does not require special tools to do it. Just use command line via terminal, we can do it.

This is command to convert file .nrg to .iso:

dd bs=1k if=fileimage.nrg of=fileimage.iso skip=300

The meaning of command above is:

• dd is command to convert and copy a file
• bs=1k is read and write 1 kilobytes at a time
• if is read from file (this case is .nrg file)
• of is write to file (this case is .iso file)
• skip=300 is skip 300 kilobytes size blocks at start of input. To get .ISO we must reduce 300kb. So we skip 300.

Tutorial: Install Grub Customizer in Ubuntu 13.10

Grub Customizer is a tools to configure the Grub Menu settings and menu entries. This tools base on graphical interface, so easy to use. So we do not need to make changes grub with syntax. This tools allows to move, remove, rename and edit the bootloader menu entries, set the default operating system, reinstallation of the bootloader to MBR, and etc.

What are the feature of Grub Customizer application? We can give background on the bootloader menu, we can change foreground color of menu list, and etc.

So how to install grub customizer in Ubuntu (this case I use ubuntu 13.10 Saucy Salamander)?

[Solve] Problem AH00558 When Restarting Apache2

I'm trying to restart apache2 using this command:

sudo service apache2 restart

or

sudo /etc/init.d/apache2 restart

But get below error:

AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1.

So, how to fix this problem?

[Solve] "The mcrypt extension is missing. Please check your PHP configuration" Phpmyadmin Error in Ubuntu 13.10

I've done installation phpmyadmin on Ubuntu 13.10 with apache web server. I restarted apache2 and after login to phpmyadmin, on the bottom of the page show this error: "The mcrypt extension is missing. Please check your PHP configuration." like screenshot below:

So, how to fix this problem?

[Solved] "/bin/rm: cannot remove `/run/user/root/gvfs': Is a directory" When exit from root / superuser

This problem occurs when we have entered in the root or superuser, then when trying to exit, show this information "/bin/rm: cannot remove '/run/user/root/gvfs': Is a directory" like image below:

So, how can fix this?

Tutorial: Install Google Chrome in Ubuntu

In this article, we use Ubuntu 13.04. By default web browser in Ubuntu 13.04 is Mozilla Firefox. If you need another web browser, like google chrome, so we have to install it manually. 

How to Compress Files and Directories Using Command Line Zip

Zip is a standard compression data what the most popular. With data compression, data size will be smaller so that the use of storage media or transfer data will be more efficient. 

ZIP files can decompress with a variety of free software or using command line. In this article, we will explain how to compress and decompress using command line.

Ebook: The Developer Shortcut Guide to SUSE Linux

Application development has a long and interesting history. From the switchboard plugs that programmed the first computers to today’s Web applications, a lot has happened. Academic discussions ebb and flow around topics such as software design, architecture, and methodologies in a quest to determine whether programming is an engineering discipline or an art or neither.

How to Install Opera on Ubuntu

Opera is a web browser and Internet software packages cross-platform. Opera made ​​by Opera Software that headquartered in Oslo, Norway. Opera can run on different operating systems, including Microsoft Windows, Mac OS X, Solaris, FreeBSD and Linux. Opera only gets a small portion browser market share of personal computers around the world. However, Opera has a bigger market share on mobile devices such as cell phones, smart phones, and personal digital assistants. Various editions of Opera can be used for devices using the Maemo, BlackBerry, Symbian, Windows Mobile, Android, and iPhone operating systems, and Java ME.

Default browser on Ubuntu is Mozilla Firefox. If you are usually using Opera for default web browser, so you need manually install Opera on your Ubuntu system. This article will explain how to install opera web browser on Ubuntu 13.04. I think for other version is also working well. Follow this step-by-step:

[Solved Problem] "GDBus.Error:org.openobex.Error.failed: Unable to request session" While Send File via Bluetooth in Ubuntu 13.04

In Ubuntu 13.04 have a problem while send file via Bluetooth to other devices. What the error description? The error description like image above is "GDBus.Error:org.openobex:Error.Failed: Unable to request session".

Alternative Windows Application for Linux

If you are familiar with Windows Applications, you can use alternative windows application for Linux.

I have posted kultwit on twitter with the hashtag #AlternativeApps via @tutonux.

This kultwit about Alternative Windows Application for Linux:

Tutorial: How to Install Vim Editor in Ubuntu

Vim is a powerfull text editor that is available on all linux distros, including Ubuntu. But, by default in Ubuntu 12.04 just installed minimal version of vim.

Like the existing notepad on windows operating system. But in practical, use vim is not as simple as using notepad. In the notepad editor there is a menu bar, which is the menu bar that can facilitate the user in terms of use, both for the save, open files or other things. 

Whereas if we use vim, it appears that only a blank screen, with no menu bar or the instructions in its use. This article not tech how to use vim editor, but I promise will post how to use vim editor in the next article.

Tutorial: Uninstall CrossOver From Linux System Ubuntu

CrossOver is an application that can be use to install windows application on Linux. CrossOver made based of Wine, but CrossOver better than native Wine application if look from graphical interface. CrossOver is commercial application or not freeware, but we can download free trial CrossOver.

In previous article, I has been posted article about install CrossOver in Ubuntu. If you want to remove or uninstall this application, you can try this tutorial.

Tutorial: How to Install CrossOver in Linux Ubuntu 12.04

CrossOver is an application that can be use to install windows application on Linux. CrossOver made based of Wine, but CrossOver better than native Wine application if look from graphical interface. CrossOver is commercial application or not freeware, but we can download free trial CrossOver.

By using CrossOver, we can easily run Windows Applications on Linux. This article will explain how to install CrossOver in Ubuntu 12.04.

Software: OwnCloud is a Free Application for Cloud Computing

OwnCloud is a free application which is used to build a private cloud computing. 

Among the improvements, OwnCloud provide file synchronization feature (file synchronization), file sharing feature (file sharing), and integrate Cloud-Storage External services.

This application built using PHP language, and claimed to be able to synchronize more quickly and easly be connected to an external cloud services such as Amazon S3, Dropbox, Google Drive or Strato Hidrive.

OwnCloud automatically be registered on WebDAV servers, Lmap, Samba, and other FTP servers when the configuration has been included in the list of OwnCloud. 

Tutorial: How to Install CrossOver Office 10 on Mandriva 2012

This article will explain tutorial how to install CrossOver Office 10 on Mandriva Linux Operating System 2012.

CrossOver is an application that can be use to install windows application on Linux. CrossOver made based of Wine, but CrossOver better than native Wine application if look from graphical interface. CrossOver is commercial application or not freeware, but we can download free trial CrossOver.

By using CrossOver, we can easily install Microsoft Office 2010 on Linux Mandriva 2012.

Tutorial: How to Disable SELinux in Fedora 17

What is SELinux? SELinux is linux variant that implements a many security policies through the use Linux Security Modules (LSM) in Linux Kernel.

For security server, SELinux is most suitable option to secure server, because efficacy and complexity. But for desktop computer, I think SELinux it is less suitable to be applied, because too complicated and difficult. To access everything becomes difficult because it is restricted by SELinux.

Tutorial: Install Webmin on Ubuntu 12.04

In the previous article, We have tried to install apache2, php5, mysql, and phpmyadmin. In this article will teach you how to install webmin in operating system Ubuntu 12.04.

Webmin is a web-based application that is used for system administration tools on Unix / Linux. By using webmin, you can easily add user accounts, setting webserver, DNS, file sharing and much more only through a web browser. 

Webmin removes the need to manually edit Unix configuration files like /etc/passwd, and lets you manage a system from the console or remotely. See the standard modules page for a list of all the functions built into Webmin, or check out the screenshots.

Tutorial: Setting PATH in Ubuntu

Adding directory to system PATH variables in Ubuntu is easy. Why we must setting path on system? because with setting path, it make easier to run an application or command through a Terminal or by command line.

To setting path in Ubuntu can in 2 ways: temporary path and permanent path.

Tutorial: Install Apache2, PHP5, MySQL, and PHPMyAdmin in Linux Ubuntu 12.04 LTS

PHP is popular language for web programming, this language is free and can install on many operating systems: Windows, Linux, and MacOS. PHP can't run without Apache. What is Apache? 

Apache is web server to run a web application that can run on many operating systems (Unix, BSD, Linux, Windows, and MacOS). The protocol used to serve the facility web is using HTTP (Hyper Text Transfer Protocol).

Installation Apache, PHP, and MySQL not easy in Linux, different in Windows operating system, many bundle application for package Apache, PHP, and MySQL like Wamp or XAMPP. 

To manage MySQL, we can use PHPMyAdmin with GUI (Graphical User Interface) that easy to use.

In this article, we will to try install package Apache2, PHP5, MySQL and PHPMyAdmin in Ubuntu 12.04 LTS.

Training-Certification: Red Hat Certified Architect (RHCA) for Red Hat Enterprise Linux Operating System

Red Hat is one of linux operating system created by Red Hat, Inc. RHL (Red Hat Linux) is linux operating system are popular until production ceased in 2004.

Since 2003, Red Hat Has discontinued production of Red Hat Linux (RHL), but issued a Red Hat Enterprise Linux (RHEL) for enterprise environment (not free).

About certification, Red Hat certification was ranked as one of the top 3 skills needed many IT vendors. Red Hat certification also important like another certification: Cisco, Microsoft, or Mikrotik. If the highest certification in Red Hat is RHCA and have to take exams RHCSA (Red Hat Certified System Administrator) at the first. RHCSA is skill practice for a System Administrator (sysadmin). Then after graduation from RHCSA we can take the RHCE (Red Hat Certified Engineer) is a professional certification, then to the expert certification is RHCA (Red Hat Certified Architect).

A Red Hat Certified Architect (RHCA) is a Red Hat Certified Engineer (RHCE) who has attained Red Hat's highest level of certification. An RHCA is a professional whose certification status with Red Hat is current and who has earned thee following Red Hat Certificates of Expertise:

• Red Hat Certificate of Expertise in Deployment and Systems Management.
• Red Hat Certificate of Expertise in Directory Services and Authentication or Red Hat Certified Virtualization Administrator.
• Red Hat Certificate of Expertise in Clustering and Storage Management.
• Red Hat Certificate of Expertise in Security: Network Services or Red Hat Certificate of Expertise in Server Hardening.
• Red Hat Certificate of Expertise in Performance Tuning.

Tutorial: Install Printer Canon Pixma 1980 in Linux OpenSUSE 12.2

How to install and configure driver printer Canon Pixma 1980 in operating system OpenSUSE 12.2. In this case, use for 64 bit, but it also can use for 32 bit with the same procedure.

This is step-by-step how to install and configure driver printer Canon Pixma 1980 in OpenSUSE 12.2 64 bit:

Tutorial: Running Windows Applications in OpenSUSE using PlayOnLinux

One type of document that is ofter used in companies to share files / documents to the other party is Microsoft Office. Application Open Office or Libre Office that is able to read and revise files Microsoft Office is very helpful process to share document, but sometimes Office files that are opened / saved by Libre Office or Open Office is not 100% same. So, the alternative is to run Windows Applications, namely Microsoft Office in Linux. In this article, we try to run Microsoft Office in Linux OpenSUSE.

One of applications in Linux is easy to install and used for this purpose is PlayOnLinux application. PlayOnLinux application using Wine to run that application, but the process is made simple and intuitive.

Here is the process of running Microsoft Office 2007 on Linux openSUSE 12.2 using PlayOnLinux.

Note: Although the run on Linux, Microsoft Office application or any other application that requires a license is still proprietary.

Tutorial: How to Disable Pidgin Notification in Ubuntu

Pidgin is a free software and open source that you can use to manage account IM (Instant Messaging). This application can use for many account: Yahoo, Google Talk, AIM, Facebook Chat, IRC, MSN, etc with a single interface.

In Ubuntu or other linux distro, pidgin provide notifications to the online buddies, friend chat, or other by popping up. But for some people, this may interfere.

You can set notifications what you want, when buddies sign on and sign off, or you only want new message notifications from your buddies. 

This tutorial will explain how to disable or enable Pidgin notification in Ubuntu. But you can try this for other linux distro.

Tutorial: How to Unmount Swap in Linux

Although we have increased the size of SWAP partition and even rebooting the computer all, the size of which is read by Linux remains as before. Apparently we must first unmount the SWAP this:

swapoff -a

Then re-create the SWAP partition so that all capacity is used:

mkswap /dev/mapper/vg_db-lv_swap

And the last step, enable back Swap:

swapon /dev/mapper/vg_db-lv_swap

Can check using the following command:

free -m

Tutorial: Setting Blackberry As a Modem in Ubuntu

For a Windows users are not necessarily familiar with DM (Desktop Manager). This application is used to backup and restore data from blackberry device, and also to make the Blackberry device as a modem.

For Ubuntu users who want to make the Blackberry device as a modem, don't be discouraged, because it can still use your Blackberry to use as a modem using 'Berry4all' application.

How to install Berry4all in linux ubuntu?

Tutorial: Installation and Configuration FTP Server in Linux Ubuntu Using ProFTPd

ProFTPd is an application that used to transfer data or familiar called as FTP (File Transfer Protocol). By using proFTPd, we can create an FTP server that can make a server can provide facilities to upload and download from the server.

ProFTPd is easy to configure. This step-by-step installation and configuration FTP server using proFTPd.

Online Course: Unix Course "Basic Unix Commands"

Unix is operating system that is available for use on personal computers, servers, and networks. Unix program based on the client-server model which allow for multi-user or network interface. With using small programs and utilities, unix system can perform multi task from multi user in the same time.

UNIX operating system consists of three main components:

1. Kernel
   This is an order from the center of the system here operasi.Dari assigned program memory configuration, as well as a time-sequence of events. The kernel also manages the repository system in response to system calls.
2. Programs
   This program makes the individual the commands given by the user to perform specific tasks.
3. Shell
   Shell enables users to communicate with the system. This is where the command line is entered, Shell translate to the kernel command.

This online course is about unix for beginner. How to use the command line in unix operating system explain in this online course. Check the following video tutorial about Basic Unix Command. This video is divided into 4 parts:

Tutorial: Install RabbitVCS in Ubuntu 12.04 LTS

If we are familiar with TortoiseSVN in Windows operating system to manage version control, there is also a subversion linux client is easy to use, namely RabbitVCS.

RabbitVCS is a GUI based application that serves to facilitate the use of subversion. From rabbitvcs.org, "RabbitVCS is a set of graphical tools written to provide simple and straightforward access to the version control systems you use. We provide multiple clients and extensions designed to give you a uniform experience no matter what development tools you use."

What is subversion? Subversion or SVN is an open source software that can manage version control software development process become trace and orderly.

After we know what is subversion and RabbitVCS, we will try to install RabbitVCS in Ubuntu 12.04 LTS. This is step-by-step to install RabbitVCS in Ubuntu 12.04 LTS:

Online Course: Linux for Beginner "TCP/IP and Linux/UNIX Networking"

This course "Linux and UNIX for a Beginner" and "Learn Linux" series, includes everything you need to know to get started using these programs professionally. The course for the beginner and the person have no previous knowledge in UNIX/Linux and bring you to get professional with Linux/UNIX operating system. 

Introduction to Linux and UNIX and completes the training with our accessible and comprehensive TCP/IP and Linux/UNIX Networking courses.

TCP/IP and Linux/UNIX Networking courses takes you into Linux/UNIX and Internet technologies, teaches you popular communication models and Internet-related protocols, and provides you with wealth of commands. This course was designed as a substitution for commercial classes, but the knowledge it imparts also effectively exceeds most of what is offered by commercial and academic classes, for just a fraction of their price. This comprehensive suite also provides you with those first certifications that may be required if you choose to pursue a career in Linux/UNIX.

Online Course: Learn Building the Linux Kernel "The Introduction to Embedded Linux"

The Introduction to Embedded Linux online training course describes how to apply Linux to embedded computing devices.

Topics of this Online Course are: a brief introduction to Linux and the open source philosophy, installing a cross-development environment, using the Eclipse IDE, running and debugging applications on an embedded target, configuring and building the Linux kernel, booting the target, and network applications.

Prerequisites:
Attendees should be familiar with C programming language and sure familiar with open source operating system Linux: Ubuntu, Fedora, Red Hat, etc.

Tutorial: Repair GRUB Using Tool Boot-Repair

Boot-Repair is a free software (licensed under GNU-GPL) to repair boot loader GRUB in Ubuntu . This usually happen when you can't boot Ubuntu after installing Windows or another distro Linux, or when you can't boot Windows after installing Ubuntu, or when GRUB is not displayed anymore, some upgrade breaks GRUB, etc.

In the previous article, has written about How to Fix Broken Ubuntu Boot GRUB using terminal command. In this article, we will fix the problem boot GRUB with a simple click using Boot-Repair.

Boot-Repair also has advanced options to backup table partitions, backup bootsectors, create a Boot-Info, restore a Windows-compatible MBR, etc.

Tutorial: How to Fix Broken Ubuntu Boot GRUB

Boot Loader is an application used to select the operating system. The function of boot loader will be visible if we use more than one operating system on a single computer. The linux boot loader called GRUB. GRUB is GRand Unified Bootloader, the powerful bootloader that can load various operating systems.

In Ubuntu, GRUB boot loader configuration file located in /boot/grub/menu.lst or /boot/grub/grub.cfg.

GRUB boot loader is broken because usually it happens on dual boot operating system. When you are after reinstall windows on dual booting, and existing GRUB can't display, so it will automatically go into windows without any option to enter into ubuntu. So what's the solution?

Ebook: Linux all-in-one For Dummies 4th Edition

Linux All-in-One For Dummies gives you eight quick-reference guides in a single book. Taken together, these eight minibooks provide detailed information on installing, configuring, and using Linux.

What you’ll like most about this book is that you don’t have to sequentially read each chapter by chapter or even each section in a chapter. You can pretty much turn to the topic you want and quickly get the answer to your pressing questions about Linux, be it about using the OpenOffice.org word processor or setting up the Apache Web server.

Tutorial: Install Codec Multimedia in Ubuntu

When finished installing Ubuntu, we usually can not play the multimedia files before install the multimedia codecs, both for video and audio. 

We can install it online or offline. The easy way is to install VLC and Media Player (mplayer) in ubuntu, because by installing the application, we are also required to install multimedia codecs both.

Online Courses: Tutorial Linux Shell Script Basics

Shell Script is a line of program or instructions that can be interpreted and will be running programs in Linux. Among the popular shell script in Linux is sh, bash and csh. Three are the default language for the Linux. However, other programming languages ​​such as Perl, Python, and PHP already have the ability to be a shell script.

Running shell script certainly from Linux console or command line that will be ready to receive any orders right or wrong. Commands will correctly output the program as you wish. But for the error commands, each language has its own way to tell that the command inputted incorrectly.

Examples of shell scripts using BASH or SH language as default language Linux: 

# ifconfig eth0 | grep inet

Tutorial: Install VLC in openSUSE 12.3

VLC Media Player is a magical software that can play a variety of audio and video files. VLC is also able to play multimedia files from CDs, VCDs, and DVDs, even capable of streaming from the internet. The advantage compared to other media player software is owned completeness codecs, so VLC is able to play almost all audio and video file formats. VLC can run on various operating systems, such as Windows, Mac and Linux.

This article describes the tutorial install VLC in linux openSUSE. There are several ways to install vlc, ie:

Video Online Courses About Embedded Linux Quick Start Guide Through Youtube

The free video online courses about Linux Quick Start Guide have 3 part which lasts less than an hour each part. This video has been publish on youtube and you can streaming from youtube. Provides learners with an introduction to the Linux environment. Narrated by Chris Simmonds at a 2010 Embedded Linux Conference Europe.

Students learn the four basic elements of Linux: toolchain, boot loader, kernel and user space. 

LPI is International Linux Training Organization based in Canada

LPI is stands for Linux Professional Institute. LPI is an international linux training organization based in Canada. LPI issued international certification for professionals "non-vendor", it means certification for linux professionals without looking linux distro expert. Different with Red Hat Certification, so his skills are usually only recognized for that product alone.

Tutorial: Install VirtualBox in Linux Ubuntu Using apt-get

Installation VirtualBox can do with command:

apt-get install virtualbox-ose vboxgtk

Also need to install kernel module. There are some kernel module option, ie:

• virtualbox-ose-modules-386
• virtualbox-ose-modules-generic
• virtualbox-ose-modules-openvz
• virtualbox-ose-modules-rt
• virtualbox-ose-modules-server
• virtualbox-ose-modules-virtual

Tutorial: How to Install XAMPP in Linux Ubuntu

What is XAMPP? XAMPP is a package software consisting of Apache, MySQL, PHP, and Perl. Apache as web server (http://localhost), MySQL as database, PHP is language interpreter for PHP programming, and Perl is programming language for client-server communication. XAMPP for linux is usually call LAMPP (Linux Apache MySQL PHP Perl).

How to install XAMPP in Linux Ubuntu?