Tail -f apache access_log

Here is how to use SSH/Telnet do a search and locate your access_log file. The linux locate command will help:

You might see lots of logs separated by domain names. A common location for these logs are /var/log/apache, so cd your way there:

Now a stream using tail of the file will occur in real time and you can watch and see who is accessing what in near real time.

Reference: Parsing Apache acces log files using PHP