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Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
Click Here to receive this Complete Guide absolutely free.
ImageMagick - is a free software suite for the creation, modification
and display of bitmap images.
convert input-file [options] output-file
ImageMagick®, is a software suite to create, edit, and compose bitmap
images. It can read, convert and write images in a variety of formats
(about 100) including GIF, JPEG, JPEG-2000, PNG, PDF, PhotoCD, TIFF,
and DPX. Use ImageMagick to translate, flip, mirror, rotate, scale,
shear and transform images, adjust image colors, apply various special
effects, or draw text, lines, polygons, ellipses and B\[’e]zier curves.
ImageMagick is free software delivered as a ready-to-run binary
distribution or as source code that you can freely use, copy, modify,
and distribute. Its license is compatible with the GPL. It runs on all
major operating systems.
The functionality of ImageMagick is typically utilized from the command
line or you can use the features from programs written in your favorite
programming language. Choose from these interfaces: MagickCore (C),
MagickWand (C), ChMagick (Ch), Magick++ (C++), JMagick (Java), L-Magick
(Lisp), PascalMagick (Pascal), PerlMagick (Perl), MagickWand for PHP
(PHP), PythonMagick (Python), RMagick (Ruby), or TclMagick (Tcl/TK).
With a language interface, use ImageMagick to modify or create images
automagically and dynamically.
ImageMagick includes a number of command-line utilities for
manipulating images. Most of you are probably accustom to editing
images one at a time with a graphical user interface (GUI) with such
programs as gimp or Photoshop. However, a GUI is not always convenient.
Suppose you want to process an image dynamically from a web script or
you want to apply the same operations to many images or repeat a
specific operation at different times to the same or different image.
For these types of operations, the command-line image processing
utility is appropriate.
In the paragraphs below, find a short description for each command-line
tool.Click on the program name to get details on the program usage and
a list of command-line options that alters how the program performs. If
you are just getting acquianted with ImageMagick, start at the top of
the list, the convert program, and work your way dowm. Also be sure to
peruse Anthony Thyssen’s tutorial on how to use ImageMagick utilities
to convert, compose, or edit images from the command-line.
convert between image formats as well as resize an image, blur,
crop, despeckle, dither, draw on, flip, join, re-sample, and
describes the format and characteristics of one or more image
resize an image, blur, crop, despeckle, dither, draw on, flip,
join, re-sample, and much more. Mogrify overwrites the original
image file, whereas, convert writes to a different image file.
overlaps one image over another.
create a composite image by combining several separate images.
The images are tiled on the composite image optionall adorned
with a border, frame, image name, and more.
mathematically and visually annotate the difference between an
image and its reconstruction..
stream is a lightweight tool to stream one or more pixel components of
the image or portion of the image to your choice of storage
formats. It writes the pixel components as they are read from
the input image a row at a time making stream desirable when
working with large images or when you require raw pixel
displays an image or image sequence on any X server.
animates an image sequence on any X server.
import saves any visible window on an X server and outputs it as an
image file. You can capture a single window, the entire screen,
or any rectangular portion of the screen.
interprets and executes scripts written in the Magick Scripting
For more information about the ImageMagick, point your browser to
convert(1), identify(1), composite(1), montage(1), compare(1),
display(1), animate(1), import(1), conjure(1), quantize(5), miff(4)
Copyright (C) 1999-2009 ImageMagick Studio LLC. Additional copyrights
and licenses apply to this software, see