So, a customer had an outage, and wasn’t sure what caused it. It looked like some IP’s were hammering the site, so I wrote this quite one liner just to sort the IP’s numerically, so that uniq -c can count the duplicate requests, this way we can count exactly how many times a given IP makes a request in any given minute or hour:

Any given minute

# grep '24/Feb/2017:10:03' /var/www/html/website.com/access.log | awk '{print $1}' | sort -k2nr | uniq -c

Any given hour

# grep '24/Feb/2017:10:' /var/www/html/website.com/access.log | awk '{print $1}' | sort -k2nr | uniq -c

Any Given day

# grep '24/Feb/2017:' /var/www/html/website.com/access.log | awk '{print $1}' | sort -k2nr | uniq -c

Any Given Month

# grep '/Feb/2017:' /var/www/html/website.com/access.log | awk '{print $1}' | sort -k2nr | uniq -c

Any Given Year

# grep '/2017:' /var/www/html/website.com/access.log | awk '{print $1}' | sort -k2nr | uniq -c

Any given year might cause dupes though, and I’m sure there is a better way of doing that which is more specific