hacking an ereader

lol.sh

i=0
j=0


while [ "$i" -lt 600 ]; do
        n=$(((i-60)/2))
        if [ "$n" -lt 0 ]; then
                n=255
        fi
        if [ "$n" -gt 255 ]; then
                n=255
        fi
        printf "\\$(printf '%03o' "$n")"
        i=$((i+1))
done > gradient
i=0

while [ "$i" -lt 60 ]; do
        cat gradient
        i=$((i+1))
done

yes $'\xFF' | tr -d '\n' | head -c $((600*40))

i=0
while IFS= read -rn1 c; do
        if [ "$c" = '' ]; then
                # pad the rest of the row
                while [ "$i" -lt 600 ]; do
                        printf '\xFF'
                        i=$((i+1))
                done
                i=0
                continue
        fi
        if [ "$c" = '#' ]; then
                printf '\x00\x00\x00\x00'
        else
                printf '\xFF\xFF\xFF\xFF'
        fi
        i=$((i+4))
done < text

yes $'\xFF' | tr -d '\n'