Generate Letter Icons

gistfile1.txt

#!/bin/bash

# NB Requires imagemagick installed

# Font to use
FONT="Lato-Black"

# Background colours
colours=("red" "green" "blue" "peru" "orange" "firebrick2" "PaleVioletRed" "brown4" "purple4"  "violet" "DeepPink4" "orchid2" "orchid4" "MediumPurple4" "navy" "RoyalBlue3" "DodgerBlue2" "SpringGreen3" "SeaGreen" "DarkOliveGreen" "gold3" "SaddleBrown")

mkdir -p random

for i in LightGoldenrod1
do

  for VAL in A B C D E F G H I J K L M N O P Q R S T U V W X Y Z \#
  do
    label=$(echo -n "$VAL"|tr '[A-Z]#' '[a-z]0')
    bg=${colours[$RANDOM % ${#colours[@]} ]}
    convert  -size 200x200 -background $bg  -fill $i  -font "$FONT"  -gravity center  label:"$VAL"  random/avatar_$label.png
  done
done

Used for https://github.com/mosaicnetworks/babble-android to generate avatars.