Real-time checking IPs

scrapers are hitting me hard

[SEOPTI]

Is there some sort of bash script to check IPs in real time in access_log and notify once for example an IP will hit more than x times?

With a large access_log (more than 20mb) which rotates every 24 hours it's hard to find all the scraping IPs manually.

[Ocean10000]

if you have a dynamic site in php or some other scripting language. You could just filter the requests as they come in without having to touch the log file at all.

See one of my previous posts here on the subject.
Quick primer on identifying bot activity. [webmasterworld.com]

Other useful posts
IP Banning Primer [webmasterworld.com]

Default User Agents of Programming Libraries and Command Line Tools [webmasterworld.com]