Hi, if You need to setup an cronjob on linux hosting. It might be cpanel, linux shell, here is how the command to run url in cron can look like:

curl http://urlxyxyxy
wget -O http://urlxyxyxy /dev/null
wget -O – -q http://urlxyxyxy >/dev/null 2>&1

(wget url alone would cause that website be downloaded into /home/user/ as a file! add -q to wget if you dont want to get email report of particular cronjob, q means quiet, >/dev/null 2>&1 will cause no email be sent too, also no file created)

Every 5 minutes cronjob to run some URL:

*/5 * * * * curl http://example.com/check/