warmup.sh

#!/bin/sh

addresses='/ /another-route /yet-another-route /yet-one-more-route /route/subroute'

base_address='https://my-website-address.io'

times='20'

bash_loop(){
  for address in $addresses; do
    curl "$base_address$address" >/dev/null 2>&1
  done
}

while [ "$times" -gt "0" ]; do
  bash_loop &
  times=$(( $times - 1 ))
done