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Apache Access Log Analysis

This is a small howto on how to analyze the amount of data requests for a webserver using the access log.

Location Access Log


Preparing Access Logs

If you need older logs as well, you'll need to unpack them. They are zipped using bzip. Uncompressing them is done like this:

bunzip2 access_log-20101226.bz2

Analyzing The Log

This is the command to get the requests per minute from the access log. The last sorts on the amount of requests per minute:

cat access_log | awk '{gsub("\\[",""); split($4,a,":");printf("%s:%s:%s %s\n",a[1],a[2],a[3] ,$1)}' | sort | uniq -c | sort -nk1,1
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apacheaccesslog.txt · Last modified: 2013/03/26 20:58 by sjoerd