Check your website's physical path . Whether using FTP or telnet, issue the pwd command to find out the full path to the directory where your script resides. If you were not notified, write your sysadmin a polite letter thanking them for not notifying you of a change that affected the operation of your site. Check file sizes . If your script creates a log file or other type of output file, check to see how big it is.
Many sites have what is called a ulimit .
Your sysadmin can advise you on this if you do not have telnet access. If you can log into your site via telnet then issue the ulimit command at the prompt. The result should be either unlimited or a number. The number is how many blocks large a file can be. You will need to then find out whether a block is 512 or 1024 bytes on your server and multiply the ulimit result by the block size to figure out the maximum file size.