Questions tagged [netpbm]
3 questions
3
votes
1 answer
Colour problem when capturing a png of the top panel of the screen
I want to capture a window as a png from within a bash script, using the window's ID. In this case, the window is the top panel. Using gnome-screenshot the colours are true, as per this image... (this image is not the same size as the following…
Peter.O
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2
votes
1 answer
Given a .gif, return the color components as X11-style hexadecimal specifiers (or equivalents)
I am a fan of potrace, and I recently read the Potrace FAQ.
The FAQ includes this beautiful one-liner:
cat img.gif | giftopnm | ppmcolormask #641b1b | potrace
The command I am looking for would return the codes of all the colors to be parsed by…
ixtmixilix
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1
vote
1 answer
tee pipeline and pnmtools - truncated file
This sequence of commands works OK:
pngtopnm file.png 2> /dev/null > dump1
pnmfile < dump1
stdin: PPM raw, 1920 by 1080 maxval 255
ls -l dump1
-rw-r----- 1 cmb 6220817 Sep 15 14:26 dump1
But redoing the pipeline to use 'tee' truncates the output…
ColinB
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