The other day I came across a situation where a web-server was getting hammered, and we needed to know who the offend(ers) were. While watching a logfile tail by at high speeds is always fun, we wanted to be able to sort the web-server access log and find top users, to be able to narrow down where the traffic was coming from. While we don’t want to block users that want to access our data, sometimes we need to throttle things back so one requester doesn’t overwhelm all the available bandwidth and make the site unusable for others. So after some playing around and digging on Google, we came up with a nice, succinct one liner to do this, here it is:
cat /path/to/access.log | awk '{print $1}' | sort | uniq -c | sort -n | tail
While looking for something else, (which is mainly when I find *other* interesting things) I found an article which included links for four free Linux eBooks. This is a great resource for anyone with some Linux experience, back to others who may be looking to get started with tux, and I would have loved to have this when I started, but that was before the Internet was available to most people. So, if you’re new to Linux, or want to get started (I used 
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