I can not get the stdout from a bash script

Build Environment
,
1

Hello community!

I am trying to find out how can I see the stdout or stderr from a bash script. I created a bash script, and I ran it in the following way:

- run:
          name: Backend server health check
          command: sh ./backend_server_health_check.sh << parameters.backend_domain >> << parameters.backend_api_key >>

My script looks like:


start=$(date +%s)
end=$(date +%s)
working_time=$((end-start))
seconds_for_waiting=5
max_retry_time_seconds=30
server_domain=$1
api_key=$2
health_check_url="api/0.1/version"

while [ $working_time -lt $max_retry_time_seconds ];
do
    sleep $seconds_for_waiting
    end=$(date +%s)
    working_time=$((end-start))
    response_code=$(
        curl -s -o /dev/null -w "%{response_code}" -H "Authorization: $api_key"\
        --url https://$server_domain/$healt_check_url
    )
    if [ $response_code -eq 200 ]; then
        echo "\nSERVER: $server_domain is up and running...\n"
        exit 0
    fi
    echo "\nRequest to: https://$1 FAILED: We continue working after $working_time seconds..."
    echo "Status code response: $response_code"
done
echo "\n[ERROR] After $(($end-$start)) seconds the server is still unavailable ...\n"
exit 1

First of all, I would like to see the each echo it executes, but after finish it should send a signal to the CircleCI step, instead of that, it is running forever.

Could you give me some advice? Thank so much!