The path to your website is partially determined by your domain name, but will be in the following format:
/home/sites/1a/8/837c5a5256/
To find the exact path login to your hosting control panel and go to
Web Tools > Scheduled Tasks
You can find the path under the box to enter your command in the subsequent page
Alternatively, if you are using PHP, you can find out this path by entering the following into a php script:
echo getcwd();
