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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, …
Continue reading “Ubuntu Networking Configuration Using Command Line”
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 …
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 …
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 …
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, ‘—‘)
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: