How to take screenshot of an X11 based GUI from a text terminal (such as tty1)?

display xorg screenshot display-manager tty

I tried using DISPLAY=:0 import -window root "$HOME/Pictures/screenshot.png" (import is part of the ImageMagick suite), but that just displays a black screen.

I want to do this as I wanted to automate opening an app and taking screenshots of it in different languages, and to change languages, I need to restart lightdm. therefore, run on a tty so your script continues running...


Solution 1:

In addition to the existing answers, to display the screenshot in ASCII in the terminal:

xwd -root -display :0 | convert - jpg:- | jp2a - --colors

(Requires x11-apps for xwd, imagemagick for convert and jp2a.)

Solution 2:

Here is solution using xwd, which is is available in almost all Xorg installations:

 xwd -root -out screenshot.xwd

The screenshot.xwd file can be opened with GIMP:

For more info see http://www.x.org/wiki/UserDocumentation/GettingStarted/.

Related

Errors running apt-get update and apt-get install mysql-server
Sendmail very slow - /etc/hosts configuration
Questions about a commutative ring with exactly three ideals [closed]
Having trouble proving natural transformation horizontal composition equality of two formulas using a diagram.
$\left|x_{n+1} - x_n\right| < C\left|x_n - x_{n-1}\right|$ prove this is Cauchy [closed]
The curve $x^3− y^3= 1$ is asymptotic to the line $x = y$. Find the point on the curve farthest from the line $x = y$ [closed]
Solving $|x-2| + |x-5|=3$ [duplicate]
Representation of positive rational numbers as series. [duplicate]
How to find signature of $\phi(A,B)=tr(AB)$
What is a nice way to prove that : $\frac{t}{t+1} \le 1-e^{-t}\le \frac{2t}{1+t}$
Linear Programming optimization with multiple optimal solutions
Every partially defined isometry can be extended to a isometry