Hi!
"m{ pattern }" is regular expression to parse log string.
It's equal to just "/ pattern /". Using different delimiter is
convenient here because usually symbol "/" must be escaped with
backslash "\", but if we use another delimiter - we can left "/" symbol
unescaped and reges is more readable.
You can further explore regex with this site https://regex101.com/r/4CGCcB/2
On 7/12/18 2:35 PM, Lauren C. wrote:
Hello,
My web is powered by Apache and PHP,its access log seems as blow,
xx.xx.xx.xx - - [12/Jul/2018:19:29:43 +0800] "GET
/2018/07/06/antique-internet/ HTTP/1.1" 200 5489
"https://miscnote.net/"; "Mozilla/5.0 (Macintosh; Intel Mac OS X
10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99
Safari/537.36"
A perl script for stat purpose of this log:
tail -f /var/log/apache2/access.log|perl -nle 'next unless m{^(\S+) -
- \[(\S+).*\] \"GET (.*?/)\s+}; printf "%-20s%-40s%-40s\n",$1,$3,$2'
I was totally confused about it.
what does m{...} and its content stand for?
Can you help give a explain?
thanks in advance.
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