Shell script for fun

barfoo.sh

while true; do
    printf "\ry "
    i=0
    while (( i++ <= 20  )); do
        printf '\b'
        sleep 0.1
        printf "et"
    done
    printf "\r                                                    "
done

while true; do
    printf "\ry "
    for i in {0..5}; do
        for j in {0..5}; do
            printf '\b'
            sleep 0.1
            printf "\e[%dm%s\e[0m" $(( i * 16 + j )) "et"
        done
    done
    printf "\r                                                                                                                          "
done