Example - Capturing user agent from Apache Web log file

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Capturing user agent from Apache Web log file

Q

How to capture the user agent from Apache Web log file?

Here are some Apache Web log file entries:127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "-" "-" 213.135.131.79 - - [13/May/2012:17:35:32 -0600] "POST /submit.jsp HTTP/1.0" 200 1024 "-" "-" "SID=1000;LANG=EN" 213.135.131.79 - - [15/May/2012:19:21:49 -0400] "GET /features.htm HTTP/1.1" 200 9955 "http://www.abc.com/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; Q312461)" "-"

✍: Guest

A

Apache Web log file entries are written in this format:

host - user time method path protocol status size referer agent cookie

The regular expression to capture user agent from Apache Web log file entries can be written as: \[.+\] "[^"]+" \d+ \d+ "[^"]+" "([^"]+)" with the multiple lines modifier "m" specified: m

2013-02-04, 0👍, 0💬

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