Screenshot grabbing
How to make a screenshot of your desktop or an application
Using imagemagick
imagemagick is a collection of tools and libraries for image manipulation. Most distribustions come with imagemagick .
Gentoo package: media-gfx/imagemagick
To take a snapshot using Imagemagic:
import -window root screenshot.png
Using xv
xv is another image manipulation program that can deal with almost all file formats. xv is not included in distributions installations, but packages are available for most. Example usage:
xv -grabdelay 2 myimage.jpg
gimp
To grab an image of the screen or a program in Gimp:
File -> Acquire -> Screen shot
Framebuffer Console
Use fbgrab to grab a screenshot in a framebuffer console.
fbgrab filename.png
kde
KDE comes with a handy program called ksnapshot that lets you with ease grab a screenshot of your desktop or a single window.
scrot
scrot is a small (66 kB) screen shot grabber based on imlib2. It has lots of options for autogenerating filenames, and can do fun stuff like taking screenshots of multiple displays and glueing them together. thanks to miztic for mentioning it
xwd
xwd (manual page) is a part of XFree, so chances are high you already have it installed. It can dump screenshots to .xwd files. This is not a common format. After taking a screenshot using xwd -root -out test.xwd the only programs I found capable of opening it were Gimp and xwud (manual page). thanks to lude for mentioning it
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