PawPrint.net Glossary of Terms

The full name for the commonly abbreviated Blog (so common is the use of Blog that few now even know the derivation)

The Set of rules to provide system management tools to monitor activity and create messages/alerts as required. Network devices that employ SNMP are frequently referred to as "Managed" devices.

An optical defect in a lens causing it to form an image that is not sharp or that is distorted in some way.

ls [options] [names]

List the contents of a directory or directories. This is similar to the dos command ´dir´ frequently abbreviated in many shells to ll for ls -l which lists files with long format. If no [names] then the contents of the current directory are listed.

Options
-1, --format=single-column
Print one entry per line of output.

-a
List all files, including the normally hidden files whose names begin with a period.

-b, --escape
Display nonprinting characters in octal an...

The opening of a lens that admits light. Except in very simple cameras, the Aperture can be varied in size by an adjustable  diaphragm, which regulates the amount of light passing through the lens. The relative Aperture is measured as the focal length of the lens divided by the diameter of the Aperture; this is expressed as an f-number: f/3, f/5, and so on.

Aperature has a dramatic effect on the Depth-of-field of the photograph.

Opening in January 1986 as one of the five original centers in the National Science Foundation´s Supercomputer Centers Program - part of the University of Illinois at Urbana-Champaign. The center works to further high-performance computing and networking and in developing software applications. NCSA greatly broadened the user base of remote supercomputing and the Internet with NCSA Telnet in 1987. In 1991, the center introduced NCSA Mosaic, the first readily-available graphical Web Browser.