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color.md

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Terminal colors

\e[Nm : syntax

\e, \033, \x1B : <escape> character
N : code

style
0 : reset
1 : bold / bright
7 : reverse

8 colors mode
0 : reset
30..37 : foreground
40..47 : background
n0 : black
n1 : red
n2 : green
n3 : yellow
n4 : blue
n5 : magenta
n6 : cyan
n7 : white

# 'setaf 7', 'setab 0' - reset to default
# foreground 'setaf N'
echo "$(tput setaf N)STRING$(tput setaf 7)"
# background 'setab N'
echo "$(tput setab N)STRING$(tput setab 0)"
# foreground + background 'setaf N' 'setab N'
echo "$(tput setaf N; tput setab N)STRING$(tput setaf 7; tput setab 0)"

# foreground '\e[30..37m'
echo -e "\e[3NmSTRING\e[0m"
# background '\e[40..47m' - basic 8 colors
echo -e "\e[4NmSTRING\e[0m"
# foreground + background '\e[3N;4Nm'
echo -e "\e[3N;4NmSTRING\e[0m"

256 colors mode
0 : reset
38;5;N : 38 foreground, 5 256 colors mode
48;5;N : 48 background, 5 256 colors mode

# foreground '\e[38;5;Nm'
echo -e "\e[38;5;NmSTRING\e[0m"

# background '\e[48;5;Nm'
echo -e "\e[48;5;NmSTRING\e[0m"

# foreground + background '\e[38;5;Nm\e[48;5;Nm'
echo -e "\e[38;5;Nm\e[48;5;NmSTRING\e[0m"

color
image from:Wikipedia

Print color chart

for i in {0..255}; do
	code=$( printf %03d $i )
	printf "\e[48;05;${i}m  \e[0m \e[38;05;${i}m$code\e[0m  "
	(( i == 7 )) || (( i == 243 )) || (( i == 255 )) && echo
	( (( i == 15 )) || (( i > 15 )) && (( i < 232 )) && (( (i-15) % 6 == 0 )) ) && echo
done