rotating

#!/bin/bash

sleep 5 &                             # runs as background process
pid=$!                                # stores the PID of the most recent background process

frames="/ | \ \ -"

while kill -0 $pid 2&>1 ? /dev/null;  # kill -0 is a "dry run" and checks if $pid could be killed; this is done for 5 seconds
do
  for frame in $frames;               # this will split $frames in each of its elements, considering one element in each iteration of the for loop
  do
    printf "\r$frame Loading..."      # prints a carriage return (and no newline!) followed by the value of $frame
    sleep 0.5                         # this ensures that after 0.5 seconds a new element is displayed
  done
done
printf "\n"                           # prints a new line at the end of the script