#!/bin/sh
# https://gist.github.com/esundahl/1651086

function color_test {
    # Daniel Crisman's ANSI color chart script from
    # The Bash Prompt HOWTO: 6.1. Colours
    # http://www.tldp.org/HOWTO/Bash-Prompt-HOWTO/x329.html
    #
    # This function echoes a bunch of color codes to the
    # terminal to demonstrate what's available. Each
    # line is the color code of one forground color,
    # out of 17 (default + 16 escapes), followed by a
    # test use of that color on all nine background
    # colors (default + 8 escapes).
    #
    
    T='gYw' # The test text
    
    echo -e "\n                 40m     41m     42m     43m\
     44m     45m     46m     47m"
    
    for FGs in '    m' '   1m' '  30m' '1;30m' '  31m' '1;31m' \
               '  32m' '1;32m' '  33m' '1;33m' '  34m' '1;34m' \
               '  35m' '1;35m' '  36m' '1;36m' '  37m' '1;37m';
    do
        FG=${FGs// /}
        echo -en " $FGs \033[$FG  $T  "
        for BG in 40m 41m 42m 43m 44m 45m 46m 47m; do
            echo -en "$EINS \033[$FG\033[$BG  $T  \033[0m"
        done
        echo;
    done
    echo
}

color_test