random image using rai(1) and convert(1)


rai -W 1000 -H 1000 -s 178469 \
  | convert PPM:- \
    -fill white \
    -font /usr/local/share/fonts/ProggyVector\ Regular.ttf \
    -pointsize 75 \
    -gravity center \
    -annotate 0 "rai(1)" \
    rai.jpg

read more and get it here