XWD: how to take SCREENSHOTS in X WINDOW SYSTEM

A screenshot is an image taken from the monitor screen.
It could comprise whole screen or a smaller part of it, usually a window.

XWD TOOL

X Window System provides an utility to dump images from a X Window: xwd.

xwd stores window images in a special format "xwdump".
This format can be used by other X tools too.


Other tools are also available:
convert from ImageMagick, KSnapshot, gnome-screenshot, ...


We install xwd (in debian, ubuntu):
$ sudo aptitude install x11-apps

CAPTURE WHOLE SCREEN

We could capture entire screen or some window only.
Whole screen in X Window System is associated also to a window: the root window.

Getting root window screenshots:

Read more »

File types and Debian packages

This article describes some file types (their extensions) and programs and debian or ubuntu packages to visualize those file types.

File Extension	Program	Debian/Ubuntu package	File Description
.chm	xchm	xchm	Microsoft help files
.djvu	djview	djview / djvulibre-plugin	Djvu file format for documents (alternative to pdf)
.rar	unrar	unrar	Rar compressed file format
.flv	mplayer	mplayer	Flash video file format
.pdf	xpdf	xpdf	Portable Document Format
.doc	abiword	abiword	Microsoft Word document format
.gz	gzip	gzip	Compressed file using Lempel-Ziv coding (LZ77) algorithm
.bz2	bzip2	bzip2	Compressed file using Huffman coding and Burrows-Wheeler compression algorithm
.avi	mplayer	mplayer	Audio Video Interleave File

Audio Video Interleave File'