https://misc.flogisoft.com/bash/home
终端配色：https://misc.flogisoft.com/bash/tip_colors_and_formatting
colors256.sh

#!/bin/bash
for fgbg in 38 48 ; do # Foreground / Background
    for color in {0..255} ; do # Colors
        # Display the color
        printf "\e[${fgbg};5;%sm  %3s  \e[0m" $color $color
        # Display 6 colors per lines
        if [ $((($color + 1) % 6)) == 4 ] ; then
            echo # New line
        fi
    done
    echo # New line
done
exit 0

colors_and_formatting.sh

#!/bin/bash
#Background
for clbg in {40..47} {100..107} 49 ; do
        #Foreground
        for clfg in {30..37} {90..97} 39 ; do
                #Formatting
                for attr in 0 1 2 4 5 7 ; do
                        #Print the result
                        echo -en "\e[${attr};${clbg};${clfg}m ^[${attr};${clbg};${clfg}m \e[0m"
                done
                echo #Newline
        done
done
exit 0

——-
http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
http://www.xfree86.org/current/ctlseqs.html
Linux环境下，主要都是泛VT102的终端，以下是vt102终端。
https://vt100.net/docs/vt102-ug/introduction.html
https://vt100.net/docs/vt102-ug/contents.html
微软的
https://docs.microsoft.com/en-us/windows/console/console-virtual-terminal-sequences
VT100,VT101,
参考开源：https://konsole.kde.org/

headless vt100 emulator
https://github.com/JulienPalard/vt100-emulator
https://github.com/freanux/VTE