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Ubuntu Networking Configuration Using Command Line

The basics for any network based on *nix hosts is the Transport Control Protocol/ Internet Protocol (TCP/IP) combination of three protocols. This combination consists of the Internet Protocol (IP),Transport Control Protocol (TCP), and Universal Datagram Protocol (UDP).

By Default most of the users configure their network card during the installation of Ubuntu. You can however, use the ifconfig command at the shell prompt or Ubuntu’s graphical network configuration tools, such as network-admin, to edit your system’s network device information or to add or remove network devices on your system Continue reading “Ubuntu Networking Configuration Using Command Line”

PicPick screen capture

PicPick is user friendly and full of features for creating your image, suitable for software developers, graphic designers and home user.

It is an all-in-one program that provides full-featured screen capture tool, intuitive image editor, color picker, color palette, pixel ruler, protractor, crosshair and even whiteboard.

It has not only everything what you need, but it loads fast, sits quietly in the system tray until needed.

This software is provided as freeware for only personal use. In this case, you are granted the right to use this program free of charge. Otherwise, you need to pay for a license for commercial use.

http://www.picpick.org/

Best Free Screen Capture Utility

On the standard Windows operating system, pressing the Print-Screen key will copy an image of the entire screen to the clipboard, holding the Alt key and pressing the Print-Screen key will capture the currently selected window. Vista and Windows 7 come with a screen capture utility pre-installed. Other operating systems may also offer a similar utility for screen capture.

As an alternative to the utilities that come with the OS, the freeware products in this review cover most of the following useful features and functions which users may find they need.

Capture full screen or freely selected screen areas.
Auto detect windows and control objects such as button, box, toolbar, tab, etc.
Snap scrolling windows, allow delayed captures.
Re-size screen shots or create thumbnails and other extra features.

Continue reading “Best Free Screen Capture Utility”

VirtualBoxes – Free VirtualBox® Images

Welcome to the VirtualBox® Images project website. This project provides virtual machines for Sun XVM VirtualBox®sporting several free and/or open-source operating systems, such as GNU/Linux or Free/Net/OpenBSD for testing, security and/or entertainment purposes.

In most cases, we’ve done a minimal setup, to let you alter the images to your own needs and learn how to use the operating systems. We will try to provide instructions for key tasks (for example, installing Guest Additions) for each image.

This site will forever be under construction, and new content may be always behind the scene. If you wish not to lose a word about our proceedings, browse our News page. You’re encouraged to subscribe to our newsfeed or follow us by by e-mail, either. Continue reading “VirtualBoxes – Free VirtualBox® Images”

Concatenate and NULL/Blank fields

CONCAT() and RTRIM() both return NULL if any of their arguments are NULL.

So CONCAT(‘xyz’, NULL) returns NULL.
RTRIM(NULL) returns NULL.
CONCAT(‘xyz’, NULL, ‘123’) returns NULL.

coalesce(FIELD, ‘—‘)

Continue reading “Concatenate and NULL/Blank fields”

PHP pseudo-cron

Pseudo-cron uses a syntax very much like the Unix cron’s one. For an overview of the syntax used, see a page of the UNIXGEEKS. The syntax pseudo-cron uses is different from the one described on that page in the following points: Continue reading “PHP pseudo-cron”