Create Loading Animations

#!/bin/bash
while true;
do
    # Frame #1
    printf "\r< Loading..." 
    sleep 0.5
    # Frame #2 
    printf "\r> Loading..." 
    sleep 0.5 
done

or

#!/bin/bash
sleep 5 &
pid=$!
frames="/ | \\ -"
while kill -0 $pid 2&>1 > /dev/null;
do
    for frame in $frames;
    do
        printf "\r$frame Loading..." 
        sleep 0.5
    done
done
printf "\n"

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Backlinks

• 5 Modern Bash Scripting Techniques That Only a Few Programmers Know (DevLog)