How do I print a 256-colour test pattern in my terminal?
I want to check that my terminal correctly supports 256 colours.
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6Please do not crosspost (askubuntu.com/questions/821157/…).– edwinkslSep 6, 2016 at 7:00
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My understanding is that that is to prevent time being wasted answering a question already answered. It's entirely relevant to both sites... How to say which is more relevant?– Tom HaleSep 6, 2016 at 7:17
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3non Ubuntu related question should redirected here– EmmanuelSep 6, 2016 at 10:26
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Yes - this is not limited to Ubuntu– Tom HaleSep 6, 2016 at 10:35
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2 Answers
256-colour test pattern
For the above, you can use my bash code. ("Look Ma, no subprocesses!")
Or for a bash quicky:
for i in {0..255} ; do
printf "\x1b[38;5;${i}m%3d " "${i}"
if (( $i == 15 )) || (( $i > 15 )) && (( ($i-15) % 12 == 0 )); then
echo;
fi
done
24-bit / truecolour test pattern
See this question for the full spectrum :)
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Not sure why you formatted it this way but at least it works and looks good. Sep 6, 2016 at 6:42
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On bash,
printfis not a builtin -- so this does indeed use subprocesses– Zach RMar 30, 2020 at 23:01
Install an application named colortest
and use the following commands to test the ASCII color graph
colortest-8 => Display color palette using 8 colors.
colortest-16 => Display color palette using 16 colors.
colortest-256 => Display color palette using 256 colors.
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3“Install an application named colortest”—this kind of begs the question. Where does that
colortestpackage originate? It doesn’t appear to be in the Fedora or Arch repos.– phgSep 6, 2016 at 7:47 -
1Said application is available for
ubuntu. For more info, refer this link vim.org/scripts/script.php?script_id=1349– SHWSep 6, 2016 at 7:58