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Show numerical values for each of the 256 colors in ZSH

Terminal - Show numerical values for each of the 256 colors in ZSH
for code in {000..255}; do print -P -- "$code: %F{$code}Test%f"; done
2010-06-18 22:19:49
User: atoponce
2
Show numerical values for each of the 256 colors in ZSH

This will show a numerical value for each of the 256 colors in ZSH. Everything in the command is a ZSH builtin, so it should run on any platform where ZSH is installed. Prints one color per line. If someone is interested in formatting the output, paste the alternative.

Alternatives

There are 6 alternatives - vote for the best!

Terminal - Alternatives
for code in {0..255}; do echo -e "\e[38;05;${code}m $code: Test"; done
2010-06-19 02:14:42
User: scribe
Functions: echo
Tags: bash color colors
42

Same as http://www.commandlinefu.com/commands/view/5876, but for bash.

This will show a numerical value for each of the 256 colors in bash. Everything in the command is a bash builtin, so it should run on any platform where bash is installed. Prints one color per line. If someone is interested in formatting the output, paste the alternative.

for i in {0..255}; do echo -e "\e[38;05;${i}m${i}"; done | column -c 80 -s ' '; echo -e "\e[m"
2010-07-21 17:30:36
User: cout
Functions: column echo
9

I like the other three versions but one uses nested loops and another prints every color on a separate line. Both versions fail to reset colors before giving the prompt back.

This version uses the column command to print a table so all the colors fit on one screen. It also resets colors back to normal before as a last step.

for code in $(seq -w 0 255); do for attr in 0 1; do printf "%s-%03s %bTest%b\n" "${attr}" "${code}" "\e[${attr};38;05;${code}m" "\e[m"; done; done | column -c $((COLUMNS*2))
2013-01-13 18:23:44
User: claudius
Functions: column printf seq
Tags: bash color colors
0

Shows the ?rendering? for each of the 256 colours in both the bold and normal variant. Using seq is helpful to get even lines, passing $((COLUMNS*2)) to column sort-of-handles the nonprintable characters.

for i in {0..255}; do echo -e "\e[38;05;${i}m\\\e[38;05;${i}m"; done | column -c 80 -s ' '; echo -e "\e[m"
2013-07-05 07:16:19
User: derv82
Functions: column echo
Tags: zsh
0

Prints an easy-to-copy color code for each color.

Know a better way?

If you can do better, submit your command here.

What others think

the zsh for loop can be a abreviated:

for code ({000..255}) print -P -- "$code: %F{$code}Test%f"

Comment by khayyam 122 weeks and 5 days ago

Good tip, Khayyam. Here's how to show coloured blocks, in 8 columns:

for code ({000..255}) { print -nP -- "$code: %F{$code}%K{$code}Test%k%f " ; (( code % 8 && code < 255 )) || printf '\n'}
Comment by noagendavz 12 weeks and 2 days ago

Your point of view

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