Merge branch 'master' of ssh://git.dismyserver.net:22516/WhatTheMike/scripts

wot

bash/colors

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+# https://unix.stackexchange.com/a/269085
+
+# A simple test of your console capacity to present so many colors is:
+# for r in {200..255..5}; do fb=4;g=1;b=1;printf '\e[0;%s8;2;%s;%s;%sm   ' "$fb" "$r" "$g" "$b"; done; echo
+# It will present a red line with a very small change in tone from left to right.
+# If that small change is visible, your console is capable of 16 million colors.
+# If your console type support this, this code will create a color table:
+
+mode2header(){
+    #### For 16 Million colors use \e[0;38;2;R;G;Bm each RGB is {0..255}
+    printf '\e[m' # reset the colors.
+    printf '\n\e[m%s\n' "Some samples of colors for r;g;b. Each one may be 000..255"
+    printf '\e[m%59s\n'   "for the ansi option: \e[0;38;2;r;g;bm or \e[0;48;2;r;g;bm :"
+}
+mode2colors(){
+    # foreground or background (only 3 or 4 are accepted)
+    local fb="$1"
+    [[ $fb != 3 ]] && fb=4
+    local samples=(0 63 127 191 255)
+    for         r in "${samples[@]}"; do
+        for     g in "${samples[@]}"; do
+            for b in "${samples[@]}"; do
+                printf '\e[0;%s8;2;%s;%s;%sm%03d;%03d;%03d ' "$fb" "$r" "$g" "$b" "$r" "$g" "$b"
+            done; printf '\e[m\n'
+        done; printf '\e[m'
+    done; printf '\e[mReset\n'
+}
+mode2header
+mode2colors 3
+mode2colors 4
+
+printf '\n\e[0;38;2;255;0;0mNote\e[m: This is only a sample, all 16m colors should be available for use\e[m\n\n'