Shell script to test support of ANSI color and style codes

ANSI-Test.sh

#!/bin/sh

# some terminals need echo -e, others don't understand it
_ECHO_OPT=""
#_ECHO_OPT="-e"

# another terminal doesn't understand \x1b but \033 works
#_ESC="\x1b"
_ESC="\033"

# ANSI Start Codes

# Styles.
Normal="$_ESC[0m"
Bold="$_ESC[1m"
Faint="$_ESC[2m"
Italic="$_ESC[3m"
Underline="$_ESC[4m"
Blink_Slow="$_ESC[5m"
Blink_Rapid="$_ESC[6m"
Inverse="$_ESC[7m"
Conceal="$_ESC[8m"
Crossed_Out="$_ESC[9m"
# Text colors.
Black="$_ESC[30m"
Red="$_ESC[31m"
Green="$_ESC[32m"
Yellow="$_ESC[33m"
Blue="$_ESC[34m"
Magenta="$_ESC[35m"
Cyan="$_ESC[36m"
White="$_ESC[37m"
# Background colors.
Bg_Black="$_ESC[40m"
Bg_Red="$_ESC[41m"
Bg_Green="$_ESC[42m"
Bg_Yellow="$_ESC[43m"
Bg_Blue="$_ESC[44m"
Bg_Magenta="$_ESC[45m"
Bg_Cyan="$_ESC[46m"
Bg_White="$_ESC[47m"
# High-intensity colors.
HiBlack="$_ESC[90m"
HiRed="$_ESC[91m"
HiGreen="$_ESC[92m"
HiYellow="$_ESC[93m"
HiBlue="$_ESC[94m"
HiMagenta="$_ESC[95m"
HiCyan="$_ESC[96m"
HiWhite="$_ESC[97m"
# Resets
NoStyle="$_ESC[0m"
NoUnderline="$_ESC[24m"
NoInverse="$_ESC[27m"
NoColor="$_ESC[39m"

Colors1="None $Black""Black""$NoColor $Red""Red""$NoColor $Green""Green""$NoColor $Yellow""Yellow""$NoColor"
Colors2="$Blue""Blue""$NoColor $Magenta""Magenta""$NoColor $Cyan""Cyan""$NoColor $White""White""$NoColor"
AllColors="$Colors1 $Colors2 $NoStyle"

Bg_Black_All="$Bg_Black$AllColors"
Bg_Red_All="$Bg_Red$AllColors"
Bg_Green_All="$Bg_Green$AllColors"
Bg_Yellow_All="$Bg_Yellow$AllColors"
Bg_Blue_All="$Bg_Blue$AllColors"
Bg_Magenta_All="$Bg_Magenta$AllColors"
Bg_Cyan_All="$Bg_Cyan$AllColors"
Bg_White_All="$Bg_White$AllColors"

HiColors1="None $HiBlack""Black""$NoColor $HiRed""Red""$NoColor $HiGreen""Green""$NoColor $HiYellow""Yellow""$NoColor"
HiColors2="$HiBlue""Blue""$NoColor $HiMagenta""Magenta""$NoColor $HiCyan""Cyan""$NoColor $HiWhite""White""$NoColor"
AllHiColors="$HiColors1 $HiColors2 $NoStyle"

Bg_Black_AllHi="$Bg_Black$AllHiColors"
Bg_Red_AllHi="$Bg_Red$AllHiColors"
Bg_Green_AllHi="$Bg_Green$AllHiColors"
Bg_Yellow_AllHi="$Bg_Yellow$AllHiColors"
Bg_Blue_AllHi="$Bg_Blue$AllHiColors"
Bg_Magenta_AllHi="$Bg_Magenta$AllHiColors"
Bg_Cyan_AllHi="$Bg_Cyan$AllHiColors"
Bg_White_AllHi="$Bg_White$AllHiColors"

# Test Table
echo $_ECHO_OPT "Background: | Style:      | Text Colors:"
echo $_ECHO_OPT "------------|-------------|----------------------------------------------------"
echo $_ECHO_OPT "            | Normal      | "$Normal$AllColors
echo $_ECHO_OPT "            | Bold        | "$Bold$AllColors
echo $_ECHO_OPT "            | Faint       | "$Faint$AllColors
echo $_ECHO_OPT "            | Italic      | "$Italic$AllColors
echo $_ECHO_OPT "            | Underline   | "$Underline$AllColors
echo $_ECHO_OPT "            | Blink_Slow  | "$Blink_Slow$AllColors
echo $_ECHO_OPT "            | Blink_Rapid | "$Blink_Rapid$AllColors
echo $_ECHO_OPT "            | Inverse     | "$Inverse$AllColors
echo $_ECHO_OPT "            | Conceal     | "$Conceal$AllColors
echo $_ECHO_OPT "            | Crossed_Out | "$Crossed_Out$AllColors
echo $_ECHO_OPT "BG Black    | Normal      | "$Normal$Bg_Black_All
echo $_ECHO_OPT "BG Black    | Bold        | "$Bold$Bg_Black_All
echo $_ECHO_OPT "BG BlackHi  | Normal      | "$Normal$Bg_Black_AllHi
echo $_ECHO_OPT "BG BlackHi  | Bold        | "$Bold$Bg_Black_AllHi
echo $_ECHO_OPT "BG Red      | Normal      | "$Normal$Bg_Red_All
echo $_ECHO_OPT "BG Red      | Bold        | "$Bold$Bg_Red_All
echo $_ECHO_OPT "BG RedHi    | Normal      | "$Normal$Bg_Red_AllHi
echo $_ECHO_OPT "BG RedHi    | Bold        | "$Bold$Bg_Red_AllHi
echo $_ECHO_OPT "BG Green    | Normal      | "$Normal$Bg_Green_All
echo $_ECHO_OPT "BG Green    | Bold        | "$Bold$Bg_Green_All
echo $_ECHO_OPT "BG GreenHi  | Normal      | "$Normal$Bg_Green_AllHi
echo $_ECHO_OPT "BG GreenHi  | Bold        | "$Bold$Bg_Green_AllHi
echo $_ECHO_OPT "BG Yellow   | Normal      | "$Normal$Bg_Yellow_All
echo $_ECHO_OPT "BG Yellow   | Bold        | "$Bold$Bg_Yellow_All
echo $_ECHO_OPT "BG YellowHi | Normal      | "$Normal$Bg_Yellow_AllHi
echo $_ECHO_OPT "BG YellowHi | Bold        | "$Bold$Bg_Yellow_AllHi
echo $_ECHO_OPT "BG Blue     | Normal      | "$Normal$Bg_Blue_All
echo $_ECHO_OPT "BG Blue     | Bold        | "$Bold$Bg_Blue_All
echo $_ECHO_OPT "BG BlueHi   | Normal      | "$Normal$Bg_Blue_AllHi
echo $_ECHO_OPT "BG BlueHi   | Bold        | "$Bold$Bg_Blue_AllHi
echo $_ECHO_OPT "BG Magenta  | Normal      | "$Normal$Bg_Magenta_All
echo $_ECHO_OPT "BG Magenta  | Bold        | "$Bold$Bg_Magenta_All
echo $_ECHO_OPT "BG MagentaHi| Normal      | "$Normal$Bg_Magenta_AllHi
echo $_ECHO_OPT "BG MagentaHi| Bold        | "$Bold$Bg_Magenta_AllHi
echo $_ECHO_OPT "BG Cyan     | Normal      | "$Normal$Bg_Cyan_All
echo $_ECHO_OPT "BG Cyan     | Bold        | "$Bold$Bg_Cyan_All
echo $_ECHO_OPT "BG CyanHi   | Normal      | "$Normal$Bg_Cyan_AllHi
echo $_ECHO_OPT "BG CyanHi   | Bold        | "$Bold$Bg_Cyan_AllHi
echo $_ECHO_OPT "BG White    | Normal      | "$Normal$Bg_White_All
echo $_ECHO_OPT "BG White    | Bold        | "$Bold$Bg_White_All
echo $_ECHO_OPT "BG WhiteHi  | Normal      | "$Normal$Bg_White_AllHi
echo $_ECHO_OPT "BG WhiteHi  | Bold        | "$Bold$Bg_White_AllHi

Next: add High background colors codes 100-107

see also https://stackoverflow.com/questions/4842424/list-of-ansi-color-escape-sequences