ansi-color-test.sh

#!/bin/bash

# Run in go using - 
# <exec command="bash">
#   <arg>-c</arg>
#   <arg>curl -s https://gist.githubusercontent.com/hadisfr/57750e9ae05a57989f17742536f82ee3/raw/ansi-color-test.sh | bash</arg>
# </exec>

bash <( curl -s https://raw.githubusercontent.com/fidian/ansi/master/ansi) --color-table

#8 bit color table (256 colors)
echo -en "\n   + "
for i in {0..15}; do
    printf " %2b " $i
done
for i in {0..15}; do
    let "i = i*16"
    printf "\n\n %3b  " $i
    for j in {0..15}; do
        let "val = i+j"
        echo -en "\033[48;5;${val}m x \033[m "
    done
done
echo -e "\n"

# something else
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  $T \033[0m\033[$BG \033[0m";
    done
    echo;
done
echo